She ___ be a scientist; she's always in the lab. MCQ with Answer and Explanation

She ___ be a scientist; she's always in the lab.
A. can
B. shall
C. must
D. may
Answer: Option C
Solution (By JKSSB Mock Tests)
'Must' deduction.

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Practice More Modals Questions

Question #1
You ___ to be more careful.
A. must
B. ought
C. should
D. need

Correct Answer: Option B


Explanation:
'Ought to' expresses moral obligation.

This question belongs to: English Modals
Question #2
She ___ sing very well when she was young.
A. can
B. might
C. could
D. may

Correct Answer: Option C


Explanation:
'Could' past ability.

This question belongs to: English Modals
Question #3
He ___ have been sleeping when the doorbell rang.
A. must
B. could
C. should
D. would

Correct Answer: Option A


Explanation:
'Must have' deduction about past state.

This question belongs to: English Modals