Question

_________ smoke here, dad．Smoking has been banned in public places．

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

Answer 1

B
祈使句的用法。祈使句的否定为在句首加don’t．根据句意“不要在这里吸烟”，吸烟为实义动词前面不加be。故选B。