Students are encouraged to _________ the design competition for robots at the university.

You didn’t have breakfast. You ________ be hungry now.

It was a heavy snow last night. Are we all here now?— Yes, and _____ of us was late for school.

Is John coming by train? —He should, but he ________ not. He likes driving his car.

What do you think of Black Coal, Thin Ice?–It’s a good film., it is not suitable for teenagers.