—Excuse me, Mum. When can we have dinner?
—Not until it in half an hour.
A. is prepared
B. will be prepared
C. has been prepared
D. was prepared
网友回答
(答案→)A. is prepared
B. will be prepared
C. has been prepared
D. was prepared
解析：句意：打扰了，妈妈，我们什么时候能吃饭？——再有半个小时就准备好了。结合语境可知下文描述的是可观的动作，故用一般现在时态。主语是动作对象，故用被动语态。选A。