I promised to go to the party with Jane and I can’t her .A. let…downB. do…upC. round…upD.

问题补充：

I promised to go to the party with Jane and I can’t her .

A. let…down

B. do…up

C. round…up

D. set…down

答案：

(答案→)A. let…down

B. do…up

C. round…up

D. set…down

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