Question

【题目】—Why does the river smell terrible?
—Because people pollute it. They put dirty water and rubbish into it.
A.make … clean
B.make … dirty
C.make … quiet

Answer 1

【答案】B
【解析】题意：为什么这条河闻起来很糟糕？因为人们污染了它，他们把脏水和垃圾倒进它的里面。pollute动词 污染，A 使---干净 B 使--脏 C 使--干净。根据pollute（污染）的意思，make--dirty与之对应，故选B。