Question

Fill in the blank using a suitable option.

Work hard, lest you ____ fail.

• A. may
• B. can
• C. should
• D. would

Answer 1

The correct option is C should

Option C is the correct answer because “should” is used to indicate what is probable, here failure on not working hard.

Option A is incorrect becaus although “may” expresses possibility, shall is used to express a strong intent or assertion in the future tense, and “should” is the past tense of shall.

Option B is incorrect because “can” expresses capacity or capability , here to fail, which is incorrect.

Option D is incorrect because “would” is the past tense of will, which indicates certainty, hence incorrect here.