―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
--- I started off to walk, but Peter gave me a lift. --- Therefore, you _____ after all. 
#103308
A
didn’t need walk
B
needed not walk
C
didn’t need to walk
D
need not to walk
Johnson can now operate the machine much better than he_______.
#103916
A
expects to
B
expects
C
is expected to
D
is expected
Until we have discussed all the details, no decision_________ about any new operations.
#100444
A
will be made
B
is made
C
is being made
D
has been made