问题
Jack, do you know the answer ______ this question It’s too difficult for me.— Sorry, I don’t know. You can ask Jim for help. He is good at math.
A:stays
B:stayed
C:to stay
D:staying;
B:stayed
C:to stay
D:staying;
正确答案是：
同类题型
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Do you let your kids trbe more dangerous.
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