从II栏中找出I栏中的应答句。

( )1.How long have you been like this?     

( )2.Why didn't you go to the party?      

( )3.Has Jim gone to Japan or Cuba?        

( )4.Lucy is an excellent student.      

( )5.Would you like to be a greener person? 

                             II                                                                            

A. Yes, he has.                                                                 

B. Of course.                                                                  

C. Cuba.                                                                      

D. So she is.                                                                   

E. Because I had to look after my sick mother.                                                                                  

F. You are welcome.                                                            

G. Since last week.          

下列变量名中合法的是( )。

A．CHINA

B．byte-size

C．double

D．A+a