do you know when the first train - in China?a:w

问题描述:

do you know when the first train _ in China?a:w
do you know when the first train _ in China?a:was produced B:is produced.c:produced.d:have produced
1个回答 分类:英语 2014-10-09

问题解答:

我来补答
选a被动式和过去式
 
 
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