----- The windows must have taken you quite a long time that day. ----- Right. They ______ for months.
#102185
A
haven’t been cleaned
B
didn’t clean
C
hadn’t been cleaned
D
haven’t cleaned
推荐题目
--- When shall we leave? --- As soon as I      what I        .
#103059
A
will finish; do
B
have finished, am doing
C
finish, will do
D
finish, do
This is the third time I _______ Beijing. The second time I ______ here was on Christmas Day last year.   
#103108
A
have visited; came
B
have visited; have come
C
visited; came
D
visited; have come
Who do you think ________ for the accident?
#99414
A
to blame
B
to be blamed
C
is to be blamed
D
is to blame