( )a book.Look!this is( )apple.tt's( )big apple.what are( they( )bags.mum,( )is myfriend,bett连接上一个问题:y.this( )my teacher,mr chen.

问题描述:

( )a book.Look!this is( )apple.tt's( )big apple.what are( they( )bags.mum,( )is myfriend,bett
连接上一个问题:y.this( )my teacher,mr chen.

it‘s an a they are this is

It's, an, a, those, are, This, is
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