Modal Verbs Questions with Solutions

Modal verbs each carry a specific shade of meaning — obligation, permission, possibility, deduction — and exam questions test exactly that distinction, most often the trap between "must not" (forbidden) and "need not" (no obligation). Here’s the approach, four fully worked examples, and a few to try yourself.

The approach, quickly

  • "Must" expresses strong obligation or a confident logical deduction ("she must be tired" = I’m confident this is true, based on evidence).
  • "Must not" means forbidden (a prohibition). "Need not" means there’s no obligation either way — these look similar but mean nearly opposite things, and exam questions deliberately test this pair.
  • "May" is used for formal permission or a genuine possibility; "might" suggests a weaker, less certain possibility than "may."
  • "Should" gives advice or a recommendation — weaker than "must," which is closer to an obligation or a rule.

Worked examples

1. Choose the correct modal: You ___ park here; it is a no-parking zone, so please move your car. (A) must not (B) need not (C) may (D) should

Solution

  1. The sentence describes a prohibition (a no-parking zone) — "must not" is the correct modal for forbidding something.

Answer: must not

2. Choose the correct modal: You ___ finish this today; there is no urgency, you can do it tomorrow if you prefer. (A) must (B) need not (C) may not (D) should not

Solution

  1. The sentence describes an absence of obligation ("no urgency"), not a prohibition — "need not" is correct, not "must not."

Answer: need not

3. Choose the correct modal: She has been studying for ten hours straight; she ___ be exhausted by now. (A) can (B) must (C) may (D) should

Solution

  1. The sentence draws a confident logical conclusion from the evidence given (ten hours of studying) — "must" expresses this kind of near-certain deduction.

Answer: must

4. Choose the correct modal: ___ I open the window? It’s getting a bit warm in here. (A) Must (B) May (C) Should (D) Need

Solution

  1. This is a formal request for permission — "May" is the standard modal for asking permission.

Answer: May

Try these yourself

Decide whether the sentence needs obligation, prohibition, absence of obligation, or deduction, then check against the answer.

1. Choose the correct modal: All passengers ___ wear seatbelts during takeoff and landing; it is mandatory. (A) might (B) must (C) could (D) would

Answer: must

2. Choose the correct modal: You ___ worry about the results; you did very well in the exam. (A) must not (B) need not (C) may not (D) shall not

Answer: need not

3. Choose the correct modal: The lights are off and the car isn’t in the driveway; they ___ be out. (A) can (B) must (C) need (D) shall

Answer: must

Where this comes up

Modal Verbs is tested directly in the English Language section of every exam Pariksha Saathi covers — SSC CGL, SSC MTS, SSC CHSL, IBPS PO, IBPS Clerk, SBI PO and SBI Clerk.

Practice more Modal Verbs questions

This page covers the approach and a handful of worked examples. Pariksha Saathi has full topic-wise practice sets for Modal Verbs (and every other English/Reasoning/Quant topic) with instant scoring and explanations — free, no account required.

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