Your son has kept _________ for two hours. You’d better ask him to have a rest.
#51156
A
study
B
studied
C
to study
D
studying
推荐题目
If prices rise too high, the government has to do something __________ it.
#49492
A
stop
B
stopped
C
stopping
D
to stop
If you want to make yourself _____, you should speak clearly and slowly.
#48958
A
understand
B
understood
C
to understand
D
understanding
— My father spends lots of time ________ with my grandmother on weekends.— Really? He is a good son.
#50980
A
saying
B
listening
C
chatting
D
singing
He found ______ very interesting _____ a horse.
#49879
A
that; to ride
B
it; riding
C
it; to ride
D
it is; to ride