将下列两组句子按(1-5) 分别排序。

(一)

( ) How many students are there in your class?

(     ) Your school is cool!

(     ) Welcome to our school.

(     ) Forty-five.

(     ) That is my classroom.

(二)

(     ) Yes. How much are they?

(     ) Yes. I want a pair of socks.

(     ) Can I help you?

(     ) Are they all right ?

(     ) They are eight yuan.