问题描述：
when() you make friends with thomason.we() friends since ten years ago
A.did;were
B.have;have been
C.did;have become
D.have;have made
(选B的话前面的空不对的上MAKE啊）
become貌似是瞬间性动词不能接一段时间吧
A.did;were
B.have;have been
C.did;have become
D.have;have made
(选B的话前面的空不对的上MAKE啊）
become貌似是瞬间性动词不能接一段时间吧
问题解答：
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