They ___ have left without telling us; that's rude. MCQ with Answer and Explanation

They ___ have left without telling us; that's rude.
A. shouldn't
B. mustn't
C. couldn't
D. wouldn't
Answer: Option A
Solution (By JKSSB Mock Tests)
'Shouldn't have' criticises past action.

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Practice More Modals Questions

Question #1
I ___ not find my glasses anywhere.
A. should
B. must
C. can
D. may

Correct Answer: Option C


Explanation:
'Cannot' inability.

This question belongs to: English Modals
Question #2
She ___ be a veterinarian; she loves animals.
A. shall
B. can
C. must
D. may

Correct Answer: Option C


Explanation:
'Must' deduction.

This question belongs to: English Modals
Question #3
We ___ not make the same mistake again.
A. must
B. may
C. should
D. can

Correct Answer: Option A


Explanation:
'Must not' determination.

This question belongs to: English Modals