-I’m really fed up with my Senior 3 life. There are too many exercises every day.--But you

问题补充：

-I’m really fed up with my Senior 3 life. There are too many exercises every day.

--But you fail if you don’t work harder.

A. must

B. would

C. shall

D. need

答案：

A. must

B. would

(答案→)C. shall

D. need

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