Men and women can ________ people from all over the world by sending and receiving electronic mail.

icies, _______ to insure that compulsory education is truly free, ________by the local government across China since the start of school on September 1.

Excuse me, Jane. Is this iPhone—No, it isn’t. is at home.

Excuse me, may I ask you some questions— Sorry, I ’ m too busy and haven ’ t even a minuteto ______.

many years since I saw you last； I _____ you at all— I wouldn’t have, either, if someone ______ you bythe name