1. Tom and Tony are twins.      

A. twin sisters    
B. brother twins
C. twin brothers    
D. twin's brother

2. Grandma is over 80 years old.

A. more than    
B. less than    
C. many than    
D. little than

3. They needn't finish their homework now.

A. shouldn't    
B. don't have to    
C. mustn't    
D. can't

4. Are you sure he is able to do the work by himself? 

A. must    
B. has to    
C. can    
D. shall

5. Both of us don't like watching sports on TV. 

A. Both of us like    
B. One of us doesn't like
C. Both us like      
D. Neither of us likes