We can't decide what to do()our headteacher tells us about itA.whileB.sinceC.untilD.when 最好有讲解
问题描述：
We can't decide what to do()our headteacher tells us about itA.whileB.sinceC.untilD.when 最好有讲解
答
我可以负责任的告诉你,答案是C.
We can't decide what to do until our headteacher tells us about it.
在校长给我们指示之前,我们不能作出决定.