题目内容

---Lucy _________ really quiet but now she is very outgoing.
---Yes. She has changed a lot.
A.use to beB.used toC.used to beD.be used to be
C

试题分析:句意:Lucy以前真的很安静,但是现在她很外向。是的,她改变了很多。短语used to do/be过去常常做/是……,动词和be都要用原形,故选C。
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