We use _______ when we feel sure something is not true.

We use ______ when we feel sure or certain that something is true.

After these modal verbs we use ______.

That ___ be Danny outside. He said he was going abroad this week.

I'm leaving work now but I ___ be a little late if there's traffic on the road.

Of course John isn't here today. He spent the whole night drinking. He ___ be at home with a serious hangover.

You ___ possibly be tired. You've just woken up

You ___ know Peter because he went to the same school that we went to but he is a few years younger than we are.

I'm sorry, you ___ be confusing me with someone else, that's not my name.

I don't like the sound of the engine. - I don't know what it is. It _____ be a mechanical problem.

It _______ be a mechanical problem. I've just taken the car to a mechanic.