--Look at the old lady in red．Is it Mrs. King?

-- No，it  ________ be her．She has gone to Canada．

A．will           B．mustn’t         C．can't           D．may

—Look at the young lady in red. Is it Mrs. King?

—No, It ________ be her. She is wearing a white dress today.

A. can        B. may       C. must      D. can’t

________old lady in brown is________university professor．

1. A.
   An，a
2. B.
   An，/
3. C.
   The，an
4. D.
   The，a

________ old lady in black is ________ university professor．

1. A.
   An…a
2. B.
   An…/
3. C.
   The…an
4. D.
   The…a