“Where is Tom?”–“He hasn’t come to school today, I think he ______be ill.”

Although Maths is very difficult, you can’t .

What’s wrong with you, Eric? You look tired.—I ________ to prepare for the final exam last night.

In our city, ________ college students want to work in West China in the future.

This is the first time wea film in the cinema together as a family.