题目内容

As students we _______ study hard.

A. can
B. may
C. must
D. could

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________ is good for our health.

A. Do exercise
B. Doing exercise
C. Does exercise
Done exercise

You can select the courses _______ on your interest.

A. base
B. basing
C. to base
D. based

No matter ________ happens, his parents always support him.

A. what
B. which
C. how
D. who

Finally, he came ________ a proper answer.

A. up to
B. to up
C. up with
D. with up

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