—______ is it from Olympic Center to your school? — It’s about 10 minutes’ walk.
--- Why do you like playing ping-pong? ----it’s interesting. A. Because B. favorite C. but
—The box is too heavy to carry. What's in it?—Oh, it is ________ books.
Dr. Bethune ________ working in spite of cutting his hand during an operation.
There is _____ wrong with my computer. It doesn' t work now . I ' ll buy a new one . A.nothing. B. something. C. everything.
—What do you think of these two books? —______ of them are interesting.And I’ve read them several times.