问题

What is your sister going to be ________ she growsup?–She is going to be an engineer.A．before

A:before
B:although
C:when 当…时候
D:unless

正确答案是：

同类题型

I know I have fallen into a bad habit and _____ it is causing me to do something wrong.

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What would you liketo have —_______.

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