Question

 —Hi, Jack!
—Hi, Eric! You ________ really quiet, but now you are very outgoing.

A．used to

B．use to

C．used to be

D．use to be

Answer 1

C

试题分析：根据句意：你过去常常是很文静的，但是现在你很外向了。故选C.
点评：be used to do sth被用来做某事；be used to doing sth习惯于做某事及used to do sth过去常常做某事，是中考必须掌握的基本语言点。其中，used to do sth表示过去常常做某事而现在已经不这样了。