she ___china before she ___last september.
问题描述:
she ___china before she ___last september.
b.didn't visit,came
d.had not visited ,came
为什么不选b,写出原因!
答
她去年9月来中国之前没来过中国.
去年9月已经是过去的时间了,而在去年9月之前,就是表示“过去的过去”
所以用过去完成时
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