问题描述：
英语语法问题,选什么 ,为什么
Have you ever()in an airplane?
A.gone to
B.up there
C.been up
D.gone flying
They always give the vacant seats to ()comes first.
A.Who
B.whom
C.Whoever
D.whomever
Have you ever()in an airplane?
A.gone to
B.up there
C.been up
D.gone flying
They always give the vacant seats to ()comes first.
A.Who
B.whom
C.Whoever
D.whomever
问题解答：
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