A. dress
B. dress
C. dress up as
D. dress up as a

A. look at      
B. look like          
C. look after          
D. look for

A. look at        
B. look up        
C. look for          
D. look after

1.He often goes home on foot. (同义句转换)
He often                       .
2.My sister does housework at the weekend.(否定句)
My sister                    housework at the weekend.
3.The girl in red is Tom' sister.(划线部分提问)
             girl is Tom's sister?
4.Does Jim help his mother do the housework?(改为陈述句)
Jim          his mother do the housework.
5.There is a knife at home.(对划线部分提问)
How many                      there at home?
6.They are old computers.(改为单数句)
                      old computer.

A. play with each other  
B. have a party  
C. dress up
D. knock on the doors

A. listening    
B. listen      
C. to listen      
D. listening to

A. put on      
B. put off      
C. put out      
D. put up

A. thinks of himself first  
B. thinks of others first
C. thinks himself first    
D. thinks others first

A. to talk
B. say
C. to talk to
D. to talk about

A. to going on a trip
B. to go on a trip
C. going on a trip
D. go on a trip