Modals and related verbs

You … have told me.

Annie … be at home. I can hear somebody talking.

A COOING DISTRACTION

This is the kind of story that you            [shouldn’t, might not]even believe really happened - but I promise it did!

I was taking my final exams at school and we were all sitting in the big hall. It was really hot so the teacher                 [was allowed to, was forced to] to open all the windows.

Usually the school kept them closed because they were very high up, which meant the teacher             [needed to, managed to] climb up a step ladder to open them.

Anyway, the exam started and I was just getting my head down when I heard a kind of rustling noise.

To be honest, I thought it          [needed, must be, should] someone fiddling with the exam papers or looking for something in their bag, though we weren't actually allowed to bring in bags. I didn't give it too much thought until I heard another strange noise, a kind of cooing. I looked up and saw that a bird, a pigeon to be precise, was flying round the room.

It             [must have, needed have, can have] come in through the open windows.

The teacher made a speech about how we            [mustn’t, shouldn’t, needn’t]let it deflect our attention from our exam, and that we                     [weren’t allowed to, needn’t, don’t have to] talk or anything, and then she started going around, climbing on the step ladder and trying to shoo the pigeon out of one of the windows. But the pigeon just find its way out at all.

It was getting more and more agitated, and making more and more noise. The teacher               [mustn’t have, can’t have]expected us to just ignore it all!

Eventually, she             [should, managed to, needed to]direct the pigeon towards an open window, and it flew off, no doubt very relieved to have escaped.

I can’t find my keys anywhere. I … them at home.

John … very well have been somewhere else.

You … have let me know.

She … there. (She went, now we know she could have stayed away)

I … do my home assignments.

You … write this essay. (But you can)