从方框里选出合适的语句，填入对话中，使对话通顺、完整。

A:      1    

B:  Hi, Billy.

A:     2    

B: I have been to the shops. Look, I bought this hat.

A:  It's pretty.   3  

B:  No, I didn't.

A:  Where has she gone?

B:     4    . She will be back at about five o'clock.

A:      5     She has been to the park every day this week.

B:  That's because she plays tennis there.

A.  To the park again?

B.  Hello!

C.  Did you go with Jenny?

D.  She has gone to the park.

E.  Where have you been

侧流烟气中每一种成分的绝对量与主流烟气（）

A.一致

B.相同

C.不同

D.基本相同