阅读对话，根据对话内容选择句子补全对话，其中有两项是多余的。

A.  How long are you staying there?    

B.  Who are you going with ?

C.  Let's go together.                

D.  That sounds good 

E.  Would you like to go, too?        

F.  What else are you doing ?

G.  What time are you going?

A: What are you doing for vacation?

B:  I'm going to Thailand for vacation

A: 1_________What are you doing there?

B:  I'm going camping in the mountain.

A: 2_________

B:  I'm going to the beach, playing volleyball and going sightseeing.

A: That sounds nice.  3_________

B: About two weeks. 4_________

A: Yes, I'd love to.

B: 5._________