— The floor is dirty.— Yes. It _______ for two days.
#99920
A
hasn’t swept
B
didn’t sweep
C
hasn’t cleaned
D
hasn’t been cleaned
推荐题目
It is said that the old coins ______ under the earth for about 100years by the time they were discovered.
#102307
A
had buried
B
had been buried
C
buried
D
were buried
The painting ______ to someone who later donated it to the college.
#99333
A
had sold
B
was sold
C
will sell
D
is sold
In the past 5 years a great deal of money _____ improving the environment of the school.
#103617
A
is spent
B
has been spent
C
was spent
D
had been spent
---- How about your last weekend?---- It was boring. I______ anything.
#100247
A
can’t do
B
hadn’t do
C
haven’t do
D
didn’t do
Ladies and gentlemen, please fasten your seat belts. The plane ________.
#104000
A
takes off
B
is taking off
C
has taken off
D
took off