如果咪咪发现这里有一只老鼠，它会说：______A．Look! A mouse. B．Look! I'm a mouse.C．Look! It's mouse.
--“Hello! 34776855” --“Hello! ________________”
Where ________________ the students?
These are our books. Please look after ________________.
—________________ on the desk? —Yes, it is.
Are these your books ________________ his books?
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