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A. first of all
B. at the first
C. firstly
D. at first

A. instead      
B. so that  
C. so    
D. instead of

A.and      
B.or    
C.instead of      
D.take the place of

A.and
B.or
C.instead of
D.because of

A.  at age    
B.  in the age    
C.  on age    
D.  at the age

A. instead of
B. instead
C. to instead
D. of instead

A. As for  
B. To    
C. On    
D. In

1. The teacher helped us to solve the problem last time.
     ______ the ______ of the teacher, we solved the problem last time.
2. What have you done with that problem?
    ______ have you ______ with that problem?
3. What about joining the English club to improve your spoken English?
    ______ ______ join the English club to improve your spoken English?
4. I really want to know how I can study English better.
    I really want to know ______ _____ study English better.
5. The little girl is too young to look after herself.
    The little girl isn't _____ _____ to look after herself.
6. He tried his best to improve his listening skills.
    He tried his best to ______ his listening skills ______.
7. She's afraid to go out at night.
    She is _____ ______ going out at night.
8. Understanding all the words in the magazine is not easy for me.
    _____ is not easy for me to _____ all the words in the magazine.

A. by bike
B. by their bike
C. by bikes
D. on bike