1. They are having a PE lesson. (对画线部分进行提问)
                                                                            
2. Jump up and down ten times.(改为否定句)
                                                                            
3. We have four lessons in the morning.(对画线部分进行提问)
    _                                                                          
4. My sister often takes photos on Sunday.(改为一般疑问句并作否定回答)
                                                                              
5. I can put the grape on my head.(改为祈使句)
                                                                            

    It's four o'clock in the afternoon . Mr Chen and his students are in the playground. They are having
a PE lesson.
Mr Chen: Boys and girls, let's do some exercise first.
Students : Yes, Mr Chen.
Mr Chen: Put your hands on your head and put your feet together. Jump up and down fifteen times.  
Ready, go !
Yang Li: Sorry , Mr Chen. I can't.
Mr Chen : What's wrong with you , Yang Li?
Yang Li: I've got a bad stomach ache.
Mr Chen: I'm sorry to hear that. Do you want to see a doctor?
Yang Li: No, I don't.
Mr Chen: OK. I can get a chair for you. You can sit over there and have a rest.
Yang Li: Thank you, Mr Chen.
Mr Chen: Not at all.  (to the other students) Boys and girls, let's go on with our lesson.
Students: OK.
1. Where are the students?
                                                    
2. What are they doing?
_                                                  
3. Can Yang Li do any exercise?
_                                                  
4. What's the matter with her?
_                                                   
5. Does she want to see a doctor?
_                                                  

1. The students are in the playground. They             (have)a PE lesson.
2. Let's             (do) some exercise.
3. Jump up and down eight             (time).
4. Boys and girls, listen to me              (careful) ,please.
5. Please             (not put)  your hands on his head !

A. ten time        
B. ten times      
C. for ten times