Question

【题目】"Tom, ______ rubbish into the river. You're polluting it," said Mrs White.
A.not throw
B.don't throw
C.not to throw
D.never to throw

Answer 1

【答案】B
【解析】句意：“汤姆，不要往河里扔垃圾。你在污染它，”怀特夫人说。否定的祈使句通常以don't开头，所以选B。