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
-Can you pick me up after work? My car ______.-With pleasure.
#101943
A
is going to be repaired
B
has repaired
C
is being repaired
D
is repaired
----Where_____the recorder ?I can not see it anywhere.-----I_____it right here.But now it is gone!
#101203
A
did you put,have put
B
have you put, put
C
had you put,was putting
D
were you putting,have put