Parents often have their children_____ little housework so that they can have more time______. 
#95750
A
doing; studying
B
done; studied
C
to do; to study
D
do; to study
We made use of every minute ______ for the coming examination.
#95753
A
to prepare
B
prepared
C
preparing
D
prepare
When first____ to the market, these products enjoyed great success.
#95754
A
introducing
B
introduced
C
introduce
D
being introduced
_______far from school, the boy is often late.
#95760
A
Living
B
Having lived
C
Being lived
D
Lived
When I passed by, I heard her _____ in the room.
#95761
A
sings
B
sang
C
singing
D
to sing
       a language requires time and effort.
#95764
A
Learn
B
Learning
C
To learn
D
Being learned
Mr. Li devoted all his life         English. Now he retired.
#95765
A
to teach
B
to teaching
C
to be taught
D
to have being taught