1、       I sit here?          
2、       I use your car ?  No, you         .  
3、       I come here tomorrow ? Yes, you       . 
4、I'm very busy. I        go now. 
5、A: What does the sign mean ?  B: It means you         be quiet. 
6、You       walk like this. 
7、It is dangerous.  You         stay away from it. 
8、You        tell me about him. 
9、Parents        be strict with their children.            
10、        you please go with me ?           
11、        I open the window ?  I'm very hot.  
12、My brother        run faster than you.  
13、I think you        be thirteen years old.  
14、She didn't have breakfast. She        be hungry now.          
15、        I dance with you ? 
16、Jack        jump high. 
17、We        walk on the grass. 
18、We         listen to the teacher carefully in class.

1、People usually eat moon cakes at Mid-Autumn Festival.
                                                                                   
                                                                                    
                                                                                     
2、His father has two offices.
                                           
                                            
                                           
3、She wants to be a singer.
                                        
                                       
                                        
4、Mike usually does his homework after school.
                                                                     
                                                                    
                                                                     
5、The students like helping the old man. 
                                                          
                                                          
                                                          
6、My cousin studies Maths very hard.
                                                      
                                                      
                                                       
7、It means you shouldn't park cars here.
                                                           
                                                           
                                                            
8、I jog to school every day.
                                         
                                         
                                                       

A. It means you must keep the grass
B. It means you must keep off the grass
C. They mean you shouldn't keep off the grass
D. They mean you should keep the grass