---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
This kind of books _____ well and they _____ out last week.
#44810
A
sells; were sold
B
is sold; sold
C
sells; sold
D
is sold; were sold
- Do you think that she will finish the job on time? - Sure. If she_______ to do it in her own way.
#44602
A
leaves
B
is left
C
is leaving
D
has left
May we leave the classroom now? No, you _____. You_____ to leave until the bell rings.
#44732
A
mustn’t, are allowed
B
don’t have to , are supposed
C
needn’t , aren’t allowed
D
can’t , aren’t supposed
Each time tourists travel to Beijing, they_______ the Forbidden City.
#44966
A
will be shown up
B
will be shown around
C
will show around
D
will show to
—What a nice classroom! —It _____ every day.
#44598
A
is cleaning
B
has cleaned
C
must clean
D
is cleaned