— The room is dirty. — I know. It ______ for several weeks.
#101322
A
hasn’t cleaned
B
didn’t clean
C
wasn’t cleaned
D
hasn’t been cleaned
推荐题目
He asked where she ____, but she didn’t respond.
#103573
A
had been
B
was
C
has been
D
is
There was a lot of fun at yesterday’s party. You _______, but why didn’t you? 
#101093
A
should come
B
may come
C
ought to have come
D
may have come
By the end of last year, another new gymnasium        in Beijing.
#101885
A
would be completed
B
was being completed
C
has been completed
D
had been completed