I'm not sure _______. [ ]A. you can help me with my Maths B. if he is able to swim or not C. ho
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题目简介
I'm not sure _______. [ ]A. you can help me with my Maths B. if he is able to swim or not C. ho
题目详情
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B. if he is able to swim or not
C. how soon he will be back
D. how long does it take to finish the job
答案