Please call my secretary to arrange a meeting this afternoon,or________it is convenient to you. (2011·江西,29)
—What has ________ done since 1989?. —It has built many schools for poor children .
—Thank you for your help. — ___________.
—Has anyone taught him how to do it?—Sure. Lots of advice________, but he hasn’t made a decision.
—The spacecraft has never been to the moon, ________ ? —Certainly.
—Miss Li has taught ____ English for about 3years.—You are lucky. ____ is a very good teacher.