Today, computers are really helpful. They ____ everywhere.
#44613
A
use
B
are used
C
used
D
were used
推荐题目
The words that we should pay attention to ___________ on the blackboard.
#44881
A
being written
B
are written
C
is writing
D
writing
The windows must _________ before you leave the room.
#44851
A
be closed
B
are closed
C
close
D
be close
- When should I hand in my paper?— Your paper must _ as soon as the bell_ .
#44944
A
hand in; rings
B
hand in; will ring
C
be handed in; will ring
D
be handed in: rings
The number of people invited ______ fifty, but a number of them ______ absent(缺席) for different reasons.
#44499
A
were; was
B
was; was
C
was; were
D
were; were