The windows must _________ before you leave the room.
#44851
A
be closed
B
are closed
C
close
D
be close
推荐题目
Students ________________slippers(拖鞋) when they are at school.
#44587
A
don’t allow to wear
B
don’t allow to put on
C
are not allowed to wear
D
are not allowed to put on
 —Smoking _________in the cinema. Please stop _________. —Sorry, I won’t.
#44571
A
is allowed; smoking
B
allows; to smoke
C
isn’t allowed; smoking
D
isn’t allowed; to smoke
 It’s important for us_____ in good health.  
#44487
A
keep
B
keeping
C
to keep
D
kept