.Your son has kept _________ for two hours. You’d better ask him to have a rest.
#51260
A
study
B
studied
C
to study
D
studying
推荐题目
When did Jenny finish ______ the letter yesterday?
#49720
A
to write
B
wrote
C
writes
D
writing
After finishing_______his homework, Tom decided______a walk in the park.
#49883
A
to do;to take
B
doing; taking
C
doing; to take
D
to do; taking
It is a good time _______.
#49260
A
sing.
B
to sing.
C
singing.
D
sang.