—Must we keep the room_______ all the time? —No, you don’t have to. 
#45320
A
cleaning
B
cleaned
C
to clean
D
clean
推荐题目
The population of China is _______ than that of _______ country in the world.
#46013
A
more, any other
B
larger, any
C
more, any
D
larger, any other
— _________ yogurt do you need?— Three cups.
#46517
A
How long
B
How far
C
How many
D
How much
He has _____ homework to do every day. 
#45831
A
many
B
lots
C
lot of
D
a lot of
The movie is so _______ that I am very _________ in it.
#46210
A
interesting, interesting
B
interested, interested
C
interesting, interested
D
interestes, interested