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We________on this project for four hours.Let's have a rest.
#99184
A
are working
B
have been working
C
worked
D
had worked
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推荐题目
The pupils here_____ all kinds of exercises every day in the past few weeks.
#104326
A
keptbusydoing
B
keepondoing
C
havekeptbusydoing
D
havebeenkeptbusydoing
He couldn’t stand the noise made by the factory, so he wrote a letter to the newspaper to _________ about it.
#100769
A
introduce
B
quarrel
C
care
D
complain
The boy whom you lent the bike to ____ by a car.
#102695
A
hit
B
be hit
C
having been hit
D
was hit
—Has Billy finished his homework today?—I have no idea.He        it this morning.
#104538
A
would do
B
was doing
C
has done
D
had done
At this time next year______ our holiday in Beijing..
#100261
A
we’re having
B
we’ll be having
C
we’ll have
D
we’re to have