Question

Fill in the blank with a suitable option:
This is an opportunity that comes once in a lifetime. We ______________ let it pass.

• A. Don't have to
• B. Shouldn't have
• C. Needn't have
• D. Mustn't

Answer 1

The correct option is D Mustn't

The correct answer is Option D.

MUSTN'T expresses compulsion.

The speaker is saying that it is compulsory that they don't let the opportunity pass.

Thus MUSTN'T is the correct answer.

The remaining options are incorrect because:

DON'T HAVE TO does not express compulsion in the required degree.

SHOULDN'T HAVE expresses obligation.

NEEDN'T HAVE expresses the requirement to not do something.