Ever since Bob______a little child ,he _____afraid of dark.
问题描述：
Ever since Bob______a little child ,he _____afraid of dark.
A.was;has been B.has been.was C.was;was D has been;has been
为什么答案是选A?
为什么不选B?
去解析
答
ever since 后的句子要用一般过去时,这个词常与现在完成时连用,所以正确的是A