Choose the sentences in which the modals are used correctly:
(A) Visitors mustn’t take photographs inside the museum gallery.
(B) Would you mind to switch off the fan for a minute?
(C) As a boy, my grandfather could walk twenty kilometres to the town fair.
(D) Arjun is not answering his phone. He must had gone to sleep early.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (A) and (C) only
(A) Visitors mustn’t take photographs inside the museum gallery. — Correct.
- Mustn’t + base verb (the simple form of the verb, like go, eat) shows that something is not allowed.
(B) Would you mind to switch off the fan for a minute? — Incorrect.
- The given sentence says “Would you mind to switch”.
- In the polite request Would you mind, the next verb takes the -ing form, not “to”.
- Correct form: Would you mind switching off the fan for a minute?
(C) As a boy, my grandfather could walk twenty kilometres to the town fair. — Correct.
- Could + base verb shows a general ability in the past.
(D) Arjun is not answering his phone. He must had gone to sleep early. — Incorrect.
- The given sentence says “must had gone”.
- A guess about the past takes must have + past participle (V3), never “must had”.
- Correct form: Arjun is not answering his phone. He must have gone to sleep early.