--- Oh, it’s you. I______ you. Why are you looking so thin and pale?
--- I’ve been ill for weeks and still under treatment.

1. A.
   can’t recognize
2. B.
   could hardly recognize
3. C.
   haven’t recognized
4. D.
   wasn’t recognizing

— Oh, it's you. I__________ you. Why are you looking so thin and pale?

— I've been ill for weeks and still under treatment.

 A. can't recognize      B. could hardly recognize   C. haven't recognized   D. wasn't  recognizing

—Oh, it’s yon. I ______ you. Why are you looking so thin and pale?

　　—I’ve been ill for weeks and still under treatment.

　　A. can’t recognize B. could hardly recognize

　　C. haven’t recognized D. wasn’t recognizing