问题
Excuse me, Mum. When can we have dinner —Not until it ▲ in half an hour.
A:will be prepared
B:is prepared
C:has prepared
D:was prepared;
B:is prepared
C:has prepared
D:was prepared;
正确答案是：
同类题型
It was not ____ she took off her dark glasses ____ I realized she was a famous film star. [ ]
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