Question

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

1. A.
   before
2. B.
   until
3. C.
   as
4. D.
   the moment

Answer 1

C
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。