----- 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
—Did you find the missing couple in the mountain yesterday?—No, but we ______ to get in touch with them ever since.
#100903
A
had tried
B
have tried
C
have been trying
D
had been trying
If you _____ him yesterday, you _____ what to do now.
#102027
A
asked … would know
B
had asked … would have known
C
asked him … know
D
had asked … would know
Miss Gao asked her mother if she _______ to the hospital the day before when she was out.
#103217
A
had gone
B
would go
C
went
D
was going
My mother doesn’t approve_______ abroad to study before graduation from high school.
#103139
A
me to go
B
me to going
C
of me to go
D
of me going
Experiments of this kind in both the U．S．and Europe well before the Second World War．
#102432
A
have conducted
B
have been conducted
C
had conducted
D
had been conducted