Active and Passive Voice

Option D correctly converts the active sentence into a passive form with proper grammar and word order: 'Grass is not eaten by a lion, however hungry he may be.' The other options contain grammatical errors or awkward phrasing.

The original sentence "The tiger caught a fox" is in the simple past tense active voice. The correct passive voice transformation for a simple past tense sentence is formed by using "was" or "were" plus the past participle of the verb. Therefore, the correct passive voice form is "A fox was caught by the tiger." Option B correctly reflects this. Option A uses past perfect passive "had been caught," which is not the direct transformation of the simple past active sentence. Options C and D use present tense forms, which are incorrect for this transformation.

The sentence 'Someone has lit the fire.' is in the present perfect tense. The correct passive voice form is 'The fire has been lit by someone,' which matches option B. Other options are either incorrect tense or meaning.

Option A, "him being taken on," correctly uses the gerund phrase with the object pronoun "him" followed by the gerund "being" and the past participle "taken," which is grammatically correct in this context. Options B and C are ungrammatical, and D is incorrect since A is correct.

The correct option is 'are being questioned' because the sentence describes an ongoing action in the present continuous passive tense, indicating that the police are currently questioning the two men.

The correct phrase is 'had been caused by' because the confusion is the subject and the phrase needs to be in the past perfect passive form to correctly fit the sentence structure. Option D ('caused by') is incorrect because it lacks an auxiliary verb, making it grammatically incomplete.

The sentence requires a modal passive construction to express the department head's insistence on having authority. "Would be given" correctly fits the passive voice with the modal verb "would," indicating a conditional or reported speech context.

The passive voice of 'The people elected him Mayor' correctly changes the object 'him' to the subject 'He' and includes the agent 'by the people.' Option B, 'He was elected Mayor by the people,' is grammatically correct and preserves the original meaning.

The passive voice of 'The box can contain no more' is 'No more can be contained in this box.' This correctly shifts the focus from the subject 'the box' to the object 'no more' while maintaining the modal verb 'can' and the negative meaning.

The sentence 'People speak English all over the world' in passive voice is correctly transformed to 'English is spoken all over the world.' This maintains the present tense and includes the phrase 'all over the world' as in the original sentence.

The sentence 'None likes him' in passive voice becomes 'He is not liked by anyone.' Option D correctly conveys this meaning. Option C ('He is liked by none') is grammatically awkward and less natural in English.

Option D, "He was seen to be leaving the house," is the correct passive voice transformation of the active sentence "I saw him leaving the house." This structure correctly uses the passive form with the verb 'see' followed by the object and the infinitive form 'to be' plus the present participle 'leaving.' Option B is close but less grammatically standard in formal English.

The sentence 'Someone pulled the bull violently.' is in the simple past tense active voice. The correct passive voice transformation in simple past tense is 'The bull was pulled violently by someone.' This matches option A exactly. Option B is incorrect because it uses a future passive construction. Option C is past perfect passive and incomplete as it lacks the agent. Option D is passive but incomplete as it omits the agent 'by someone.' Therefore, option A is the correct and complete passive voice form of the sentence.

Option B correctly converts the active sentence into passive voice by making 'An old shirt' the subject, followed by the correct past participle 'was given' and the agent 'by Sajid'. The other options contain grammatical errors or incorrect agent placement.

The sentence in passive voice 'This house is used very rarely by us' changes to active voice as 'We use this house very rarely.' Option B correctly reflects this transformation with proper tense and subject-verb agreement.

Option C correctly forms the passive voice of the present perfect question by using 'Have' to agree with the plural subject 'all the necessary arrangements,' followed by 'been made by someone.' The word order and verb agreement are accurate here.

The correct passive voice of the sentence 'The boy did not break the glass' is 'The glass was not broken by the boy.' This is because the original sentence is in the simple past tense negative form, and the passive voice must match this tense.

Option C correctly converts the passive voice sentence into active voice with proper grammar: 'We should not encourage indiscipline.' The other options contain grammatical errors or incorrect verb forms.

The sentence 'The boy has rung the bell' is in the present perfect tense active voice. Its correct passive voice form is 'The bell has been rung by the boy,' which maintains the present perfect tense and correctly uses the passive construction.

The sentence 'Sana is washing her clothes' is in the present continuous tense. Its passive voice form is 'Her clothes are being washed by Sana,' which correctly uses the present continuous passive construction.

The sentence is in the past tense, so the passive voice must also be in the past tense. 'Held' is the correct past participle of 'hold,' making option D correct. Other options either use incorrect verb forms or tenses.

The passive voice of 'The teacher may punish you' is 'You may be punished by the teacher,' which correctly retains the modal verb 'may' and changes the verb to the passive form 'be punished.'

The sentence 'He was being chased by the dogs' is in the past continuous passive voice. Its active voice equivalent is 'The dogs were chasing him,' which is option D, correctly reflecting the past continuous tense in active form.

The passive sentence 'Movies are not watched by him' changes to active voice as 'He does not watch movies.' This maintains the present tense and negative form correctly.

The active sentence 'She has completed two courses' is in the present perfect tense. The correct passive form uses 'have been' plus the past participle, matching the plural subject 'two courses'. Therefore, 'Two courses have been completed by her' is correct.