题目内容

The teacher told his students to make the most of the opportunities ____ hand.

A. in
B. of
C. on
D. at

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He let the team _____ by not trying hard enough.

A. down
B. off
C. on
D. in

Have you made ____ your mind what courses you are going to take yet?

A. in
B. of
C. up
D. from

She learned the rules of the game step ______ step.

A. in
B. by
C. on
D. off

Have you decided ________ where to go?

A. on/upon
B. in
C. off
D. of

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