important tool(工具)the computer is! -I think so.
My father says he has no time to_________ newspapers in his office.
—Who is the student on the playground? —Andy. _________ often takes a walk with _________.
—May I have a dog at home, Mum? —Yes, you can. But you must know how to _________ it.
I have a lot of homework to do today, _________ I cannot go swimming with you.
— _________ your teachers kind to you? —Yes. And they teach _________.