―Hello!May I speak to Jack, please?  ―Yes, speaking. -Oh, I _______ your voice at first.
#101984
A
don’t recognize.
B
didn’t recognize.
C
hadn’t recognized.
D
haven’t recognized.
推荐题目
He______to several European counties so far.
#103236
A
was
B
has been
C
had been
D
will be
Look out! The ceiling _____ l down. 
#103658
A
is to fall
B
will fall
C
is going to fall
D
is falling