—The window is dirty.—I know. It ______ for weeks.
#102943
A
hasn’t cleaned
B
didn’t clean
C
wasn’t cleaned
D
hasn’t been cleaned
推荐题目
Then I made a complaint to the manager and the problem        soon.
#102225
A
was solved
B
had been solved
C
would solve
D
has been solved
With more forests being destroyed, huge quantities of good earth _______ each year.
#104504
A
is washing away
B
is being washed away
C
are washing away
D
are being washed away
—Look! Somebody     the sofa.—Well, it wasn’t me. I didn’t do it.
#101195
A
is cleaning
B
has cleaned
C
was cleaning
D
had cleaned