The phone had been ringing for three minutes before it            .
#104247
A
answered
B
had answered
C
was answering
D
was answered
推荐题目
—You haven’t got the textbook for my chemistry yet.—I know, and we ________ to get it for the last five weeks.
#100488
A
will have been trying
B
have been trying
C
will be trying
D
had tried
The country life he was used to ____ greatly in the past decade. 
#101394
A
change
B
has changed
C
changing
D
have changed
(2014·宝鸡三检)By the time the girl comes back to life,scientists probably________a cure for this incurable disease.
#99123
A
will have discovered 
B
are discovering
C
will be discovering 
D
have discovered
His daughter has ___________ the young politician for five years.
#101104
A
got married with
B
been married to
C
been married with
D
got married to
Catherine didn’t like her roommates, because they _____ things from her.
#101721
A
are always borrowing
B
have always borrowed
C
had always borrowed
D
were always borrowing