( ) they are my friend

( ) they are my friend they are my friend和these are my friend改错 they are a( ) my best friend my friend's clothes are i____.They are cheap. My answer is that they are all my friend 1、Whose books are they?(翻译）2、They are my friend's books.(翻译） your are my friend. These are my friend ( )my good friend,Kate and Mary.选they are还是these are? 为什么 they all are friend 还是 they are all friend They are very _____(friend). My friend,Mary likes tomatoes(because they are delicious)怎样提