— May I go and play with Dick this afternoon Mum?No you can’t go out your work is being

问题补充：

— May I go and play with Dick this afternoon, Mum?

No, you can’t go out your work is being done.

A. before

B. until

C. as

D. the moment

答案：

A. before

B. until

(答案→)C. as

D. the moment

解析：本题易误选B。根据后面的…is being done可以看出“因为你正在做作业，所以不能出去。”其他选项不符合句意。