I didn’t know this is a one way street, Sir.—___________.

People used to communicate on the phone, but now they are used __________on Wechat because it makes communication ________..

The first thing ____ you should do is to learn all the new words by heart.

I think her dress comes from the1970s.—It_________ be from that time. Itlooks so modern on her.

Mr. Bally approved ______ the conference.