----Tomorrow is a holiday. Why are you doing your homework? -----I am doing these exercis

问题补充：

----Tomorrow is a holiday. Why are you doing your homework?

-----I am doing these exercises now so that I won’t have on Sunday.

A. it

B. them

C. for

D. to

答案：

A. it

B. them

C. for

(答案→)D. to

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