Question

【题目】If people________polluting the air, animals and plants will die soon.

A. didn't stop B. don't stop C. haven't stopped D. shall not stop

Answer 1

【答案】B

【解析】

句意：如果人们不停止污染空气，动植物很快就会死去。考查一般现在时。由题干可知本句是if引导的条件状语从句，主句用一般将来时，从句用一般现在时表示将来。结合选项可知B选项符合题意，故答案选B。