1.Mary wrote an article on _______ the team had failed to win the game. 

A. why      

B. what      

C. who       

D. that  

2. Do you have any idea _______ is actually（实际上） going on in the classroom?  

A. that       

B. what       

C. as        

D. which  

3. —Why does she always ask you for help?    

—There is no one else _______, is there?

A. who to turn to  

B. she can turn to

C. for whom to turn  

D. for her to turn  

4. Elephants have their own way to tell the shape of an object and _______ it is rough or smooth.

A. /         

B. whether     

C. how       

D. what  

5. Danny left word with my secretary _______ he would call again in the afternoon.       

A. who    

B. that    

C. as    

D. which 

6. It was _____ he worked hard that he succeeded.

A. because    

B. since    

C. as   

D. for 

参考答案

1.A  2. B  3. B  4. B  5. B   6.A

1. A why在它引导的从句中充当原因状语，从句在主句里充当介词on的宾语。

2. B  what在它引导的从句中充当主语，同时整个从句可看成是idea的同位语从句，来说明idea的具体内容。 

3. B 本题考查定语从句以及固定短语turn to 的用法，关系代词因为在后面定语从句中做宾语因此省略掉，turn to sb 求助于某人。  

4. B 本题根据意思以及后面与or 的搭配关系可判断该处是“是否”，whether 引导宾语从句。 

5. B 本题考查名词性从句中的同位语从句，根据下文可知Danny留下的口信的内容，that 引导名词性从句。

6. A 强调句。他成功是因为努力工作

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