题目内容
--- Who are the teenagers gathering at the school gate?
--- Well, if you _____ know, they are all my visiting students.
A. need B. must C. may D. will
B
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题目内容
--- Who are the teenagers gathering at the school gate?
--- Well, if you _____ know, they are all my visiting students.
A. need B. must C. may D. will
B