what do you call this in english .its a stamp .it______sending letters
题目
what do you call this in english .its a stamp .it______sending letters
a is used to b is used for 为什么选 b
而computer are used to control not only the speed but also the direction of the spaceships是用used to
答案
固定搭配 be used to do sth be uesd for doing sth
举一反三
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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