1. I've been skating for one and a half years.(用since改写句子)
    I've been skating _______and_______  _______．
2. They have been waiting for half a day.(改为一般疑问句)
    _______ they_______ _______for half a day?
3. She is so upset that she can't believe anyone.(改为同义句)
   She is_______ anyone.
4. I have been collecting stamps since 2 years ago.(对划线部分提问)
    _______you been collecting stamps?
5. Please remember to post the letter for me.(改为同义句)
    _______post the letter for me.

A. Not really                    
B. Yes,I am      
C. Of course I do                  
D. I have no idea

A. Yes, he is      
B. No, he is
C. Yes, he does    
D. No, he doesn't

— May I go to the park with you?
— No,             .

A. you may
B. sure
C. you may not
D. thanks

A. Yes, he does  
B. No, he wasn't
C. Yes, he was  
D. No, he didn't

1. He listened to the teacher very carefully. (改为一般疑问句)
           _   he      _   to the teacher very carefully?
2. Anna and Tom are good at Chinese. (改为同义句)
          _   Anna      _   Tom are good at Chinese.
3. They have planted thousands of trees these years. (对划线部分提问)
           _   trees have they planted these years?
4. This TV play is meaningful ,but that one is not. (合并为一个句子)
    This TV play is       _          _   than that one.
5. David plays basketball better than any other boy in his class. (改为同义句)
    David plays basketball      _           _    in his class.

A. Yes,we shall              
B. No,we shall not  
C. All right                      
D. That's all right

1. There will be more pollution. (改为一般疑问句)
                                                                        
2.I think there will be more green trees。(改为否定句)
____________________________________
3．It's fine today.(对画线部分提问)
____________________________________
4.I think Canada will win the next World Cup.(对画线部分提问)
____________________________________

1．She has been working for 20 hours.（改为一般疑问句，并作否定回答）
             she       working for 20 hours?No,              .
2．I've been skating since l was six years old.（对画线部分提问）
                           you been skating?
3．Tom ran for one hour.（用现在完成进行时改写）
      Tom                     for one hour.
4.   We have been learning English for three years．（改为同义句）
      We have been learning English                            .
5.   I started playing tennis when I was seven years old. （改为同义句） 
      I started playing tennis                            seven.

A. No,they aren't                  
B. No,they won't    
C. No,they don't                  
D. No,they can't