问题
选择题
Mr.Black works in a restaurant. He is often very because there are
always lots of things to do. [ ]
A.free
B.dangerous
C.be
D.busy
答案
答案：D
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Mr.Black works in a restaurant. He is often very because there are
always lots of things to do. [ ]
A.free
B.dangerous
C.be
D.busy
答案：D