mark --- in china for ten years and now he teaches chinese in britain
题目
mark --- in china for ten years and now he teaches chinese in britain
a has worked
b worked
c had worked
d is working
说理由!
答案
答案选C
用过去完成时
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我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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