---Whatisthat?IsitanEnglishlearningmachine?---Yes.It

问题详情：

---What is that? Is it an English learning machine?

---Yes. It ________ us to improve our English.

A. is used for helping          B. used to help     C. used to helping

【回答】

A

【解析】考察、used 用法。be used for doing sth表示用来做某事。Used to do sth过去常常做某事；used to sth习惯于某事。句意：那是什么？是一部英语学习机吗?是的，它是被用来帮助我们提高英语的。故选A。

知识点：动词语态

题型：选择题