What's that?-It's a stamp and it___letters.A used to post B is used to post

问题描述:

What's that?-It's a stamp and it___letters.A used to post B is used to post

What's that?-It's a stamp and it___letters。 A used to post B is used to post
选B
因为邮票是被送出的,所以用被动
有不会的可以再问我

B be uesd to 被用作...
ued to do 过去常长
这是什么
这是邮票,这是用来寄信的。

is used to post

B be used to do sth 被用于做某事
它是用于邮信件的

B
那是什么?是一个邮票.它是被用来邮信的
used to post “过去常常”,用于主动语态.is used to post “被用来邮寄”,用于被动语态.
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