What do you mean by saying every minute counts?— I just mean that every minute must be made full use of ______ for the final examination. [ ]

If he is once ______ laughing, he finds ______ difficult to stop.

He is always______fault with other people though he doesn’t do his own work properly.

－Whichcity is your favorite－Hangzhou,of course. It is the _____ place that I have ever visited.

What’s this in English — .