Her Russian is excellent. It is possible that she had ...

★ Modals in The Past

Her Russian is excellent. It is possible that she had a very good teacher.

A. She might/may/could have had a very good teacher

B. She might not/couldn’t have had a very good teacher

C. She needn’t have had a very good teacher

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Jim looks very happy. I think he ___ gotten a new job.

A. must have

B. should have

C. can’t have

D. could have