Question

【题目】句型转换

【1】It is known that Edison invented the first electric light.

Edison ________ ________ ________ ________ ________ the first electric light.

【2】Smoking is harmful to our health.

Smoking ________ ________ ________ our health.

【3】To transport，sell or set the frogs free in Hawaii is a crime.

_______ _______ a crime to transport，sell or set the frogs free in Hawaii.

【4】They are trying to find an effective chemical and they can use it to kill the frogs.

They are trying to find an effective chemical ________ ________ ________ ________ ________ kill the frogs.

Answer 1

【答案】见解析

【解析】【1】is；known；to；have；invented

【2】does；harm；to

【3】It；is

【4】that；can；be；used；to