________ be late for class!上课不要迟到。

________ late for class again.

1. A.
   Don’t
2. B.
   Not be
3. C.
   Not
4. D.
   Don’t be

________ late for class tomorrow.

1. A.
   Be not
2. B.
   Won't be
3. C.
   Not be
4. D.
   Don't be