The classroom        every day.
#44450
A
should clean
B
should be cleaned
C
should cleaned
D
should be cleaning
推荐题目
The food ________ because it _________ good.
#44404
A
sold out soon; was tasted
B
was soon sold out; tasted
C
has soon sold out; tasted
D
will soon sold out; tasted
Put on more clothes, Kate. The window in our room ______ yesterday. 
#44786
A
was broken
B
are broken
C
have broken
D
will break
Some new teaching buildings ____ in Shunyi last year. 
#44466
A
build
B
are built
C
built
D
were built
Young trees should ________ every day.
#45076
A
water
B
watered
C
be watering
D
be watered
Don’t stand up until you ____________.
#44883
A
tell to
B
are told
C
are told to
D
are told to do