问题补充:
—Excuse me, Mum. When can we have dinner?
—Not until it in half an hour.
A. is prepared
B. will be prepared
C. had been prepared
D. was prepared
答案:
(答案→)A. is prepared
B. will be prepared
C. had been prepared
D. was prepared
解析:句意:打扰了,妈妈。我们什么时候可以吃饭?——再有半个小时就准备好了。结合语境可知下文为省略句,根据连词until可知后面状语从句,根据语境及时间状语可知下文主句描述的是将来的动作,故条件从句中用一般现在时态表示将来动作,故选A。