The train leaves at 6:00 p.m.So I have to be at the station ________5:40 p.m.at the latest.

A: I’m going on a trip to Singapore after the exam.B: Really ______!

When he was alive, the old scientist used to say that knowledge ____ from practice and he gained his experience by doing a lot of practical work

I like the dress, but I’m afraid I don’t have enough money.— Don’t worry. I don’t mind ____you some if you like.

Jack, you erase the blackboard today, __________?—But I did it yesterday.