The windows must _________ before you leave the room.
#44851
A
be closed
B
are closed
C
close
D
be close
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---How often do I need to feed the birds?---They______ food every day, or they will be hungry.
#44408
A
must give
B
mustn’t give
C
must be given
D
mustn’t be given
I won’t leave my office until my work _______.
#44474
A
will finish
B
are finished
C
is finished
D
was finished
This math problem        .
#44841
A
can be easily work
B
can be easily worked
C
can is easily worked
D
may easily worked