______ morning exercises is good ______ us. 
[     ]
A. Doing, at           
B. Doing, for           
C. Do, at                
D. Do, for 
词类转换 根据所给词汇，填入一个正确的形式。
1. Edison kept _______ out his new idea.(try)
2. Do you think the computer today is _______ inventions?(useful)
3. I saw a boy ________ on the railway tracks near the station.(play)
4. I want to learn how to run quickly and to eat _______.(health)
5. She speaks too quietly.Tell her ______ a little louder.(speak)
I know the dictionary is ______ worth _______ in the shop.
[     ]
A. very, buying    
B. very, to buy      
C. well, to buy      
D. well, buying
He feels like ______ a book very much.
[     ]

A. printing    
B. to print      
C. selling      
D. to sell

His mother gets up at 6:00 a. m. every day. She is used to ____ early to make breakfast for the family. 
[     ]
A. get up
B. getting up
C. gets up
D. got up
用方框中所给词的适当形式填空。
1. How about ____(explore) that mountain?
2. Jack couldn't help ____(cry) when he was alone at night.
3. —Why do you walk to school?  — My bike is ____(break).
4. He is a ____(success) basketball player.
5. We are looking forward to ____(watch) the movie.
This book is very interesting, so it is worth ____. 
[     ]
A. read
B. reading
C. to read
D. be read
He spent much time ______ English.
[     ]
A. learning        
B. learns  
C. to learn        
D. to learning
The book isn't mine. I will finish ______ it in one hour.
[     ]
A. read  
B. to read  
C. reading   
D. reads
Have you finished _______ the picture?
[     ]
A. draw        
B. to draw        
C. drew      
D. drawing
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