The teacher asked the boy many questions, but he only answered ______ of them.
--Can I get you a cup of tea? -- ________ .
The eraser is not mine.It’s__________.
What are the children going to do if it_________ next Saturday?
Hiking is__________ camping.I like both of them.
一I can’t find my pen.Could you lend me ________ ? —Sorry,I’m using it__________.