题型：单选题题类：真题难易度：普通

—Are Sandy and Kate________ good friends? —Yes, they are. Please look after________ .

A、your; their B、your; them C、yours; theirs D、you; them

举一反三

一No, I have a blue ______.

—No, it isn't. _______ is white.

—I'll take_______.

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