问题描述:
Some people are still strong and healthy___their 60s and 70s.( )
A.in B.during C.for D.after
这道题我选的是B,请说明一下B错的原因,
A.in B.during C.for D.after
这道题我选的是B,请说明一下B错的原因,
问题解答:
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