He ___ be very old; he was in my father's class at school. MCQ with Answer and Explanation

He ___ be very old; he was in my father's class at school.
A. must
B. can
C. may
D. shall
Answer: Option A
Solution (By JKSSB Mock Tests)
'Must' deduction.

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Practice More Modals Questions

Question #1
She ___ have been waiting for ages; she looks impatient.
A. must
B. could
C. should
D. might

Correct Answer: Option A


Explanation:
'Must have been' past deduction.

This question belongs to: English Modals
Question #2
They ___ have left without telling us; that's rude.
A. mustn't
B. wouldn't
C. couldn't
D. shouldn't

Correct Answer: Option D


Explanation:
'Shouldn't have' criticises past action.

This question belongs to: English Modals
Question #3
That ___ be John's house; there's his car.
A. must
B. can
C. shall
D. may

Correct Answer: Option A


Explanation:
'Must' deduction from evidence.

This question belongs to: English Modals