问题

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

A:used to
B:use to
C:考点：used to do 句型用法
D:use to be

正确答案是：

同类题型

The furniture in the other shop will be ______, but ______.

The number of the students in our school ________ very large and there ________ a number of teachers.

It is reported that a bus went out of ______control on a highway ______ south of the city last night

I’ll join the music club ________ Mtoo.

It’s ________ to make others ________ for you so long.