According to a recent U.S. report, children spent up to 25 hours a week _______ TV. 
#92921
A
watching
B
to watching
C
to watch
D
watch
推荐题目
_______ on your study, and you will make greater progress.
#93243
A
Concentrating
B
If you concentrate
C
Concentrate
D
To concentrate
 _____ is no doubt _____ Jennifer will come to see me this weekend as usual.
#92412
A
It; that
B
It; whether
C
There; that
D
There; whether
Air is to us _____ water is to fish.
#92589
A
what
B
that
C
which
D
is that