While you are having an exam, you must write as ____ as you can.

A. careful            B. carefully        C. more carefully     D. most carefully

While you are having an exam, you must write as ________ as you can.

1. A.
   careful
2. B.
   carefully
3. C.
   more carefully
4. D.
   most careful

While you are having an exam, you must write as ________ as you can.