___ study in No.4 Middle School? 
#57141
A
Did you used to
B
Did you use to
C
Do you used to
D
Do you use to
推荐题目
Please listen to the teacher carefully. Don't ______ the window.
#53757
A
look out
B
look into
C
look out at
D
look out of
--- Is your father in?--- No, he ______ for three hours.
#58838
A
was out
B
has been out
C
went out
D
has gone out