---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
推荐题目
—Jack, your hair is too long! —Really? I’ll have it _____ right now.
#44885
A
cuts
B
cutting
C
to cut
D
cut
－Oh, my God! I can't find my key to the office.－Don't worry. Perhaps it _________ at your home.
#44778
A
left
B
has left
C
was left
D
had left
---Why is the classroom so dirty? --- Sorry, sir. It ______ yesterday. We forgot to do it.
#44831
A
doesn’t clean
B
didn’t clean
C
isn’t cleaned
D
wasn’t cleaned
China has offered much help to Japan since it ______ by the earthquake and tsunami（海啸）.
#44983
A
hits
B
is hit
C
was hit
D
will be hit