Mario used to _____________ in the morning.      
#48943
A
practiceswimming
B
practicingswimming
C
practiceswim
D
practicesswimming
推荐题目
Why not ______ help when you were in danger?
#49467
A
you ask for
B
ask for
C
asking for
D
to ask for
The old radio requires____________, so you’d better have it ______soon.
#51255
A
to repair, repaired
B
repairing, repaired
C
repaired, repair
D
to repairing, repair
It’s important             exercise every morning.
#50836
A
to take
B
taking
C
takes
D
to taking