问题描述:
用人称代词和物主代词的适当形式填空:Are those your letters?No,( )aren't.
These are Bill and JIm.( )pants are blue.
Is that your aunt?No,( )isn't.
求答案及方法
These are Bill and JIm.( )pants are blue.
Is that your aunt?No,( )isn't.
求答案及方法
问题解答:
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