—Excuse me, Mum. When can we have dinner? —Not until it in half an hour.
This pencil is long but that __________ is short.A.one’sB.oneC.ones
What’s this Chinese?A. in B. for C. at
--- 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.