weknow, smoking is harmful to one's health.
您需要 登录 才可以下载或查看，没有帐号？立即注册
The sun heats the earth, which is veryimportant to us.
1)Alicereceived an invitation from her boss, ___came as a surprise.
A. it B. that C. which D. he
答案C. 此为非限定性从句，不能用 that修饰，而用which.，it 和he 都使后句成为句子，两个独立的句子不能单以逗号连接。况且选he句意不通。
2)The weather turned out to be very good,___ was more than we could expect.
A. what B. which C. that D. it
3)It rained hard yesterday, ____ preventedme from going to the park..
A. that B. which C. as D. it