I think students _____ to do homework with friends.
#44494
A
should allow
B
should be allowed
C
were allowed
D
must be allowing
推荐题目
.The school meeting ________ once every two weeks in the concert hall.
#44390
A
is held
B
was held
C
will be held
D
has been held
---It’s difficult for the villagers to cross the river. ---I think a bridge______ over the river.
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A
should be built
B
is being built
C
has been built
D
was built
We ____ not to play computer games.
#44747
A
are told
B
have told
C
told
D
tell
About seventy percent of the earth         with water.
#44524
A
is covering
B
is covered
C
are covering
D
are covered