根据情景. 填入恰当的句子补全对话。 A:What beautiful shells! Are they yours?
B:Yes, they are.
A:1.                           
B:When I was six years old.
A:2.                                 
B:For eight hours.
A:3.                             
B:About 200.
A:Wow! So many!  4.                                     
B:The one that looks like a dog. I like it best. It"s very beautiful. And my uncle gave it to me for my
   birthday.
A:Can I have a look?
B:5.              . Here you are.