看图，照例子，把对话补充完整。
Model：
A：What’s this? A：What are these?
B：It’s a cap． B：They are caps．
A：How much is it? A：How much aye they?
B：It’s 3 yuan． B：They are 8 yuan．
1．A：What’s this? 2．A：________ ________ these?
B：It’s a ________． B：________ ________ ________．
A：_________ _______ ________ ________? A：How ________ ________ they?
B：It’s ________ yuan． B：They are ________ ________ ．
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