Ответ:

Why didn't you call me when you arrived? I  

would have given you a lift.

You  

should have revised more for your exam. Now you have to retake it.

There's nobody at home. Everybody  

must have gone out.

She  

can't have failed the exam! She'd been revising all week!

You  

shouldn't have been so rude to the teacher!

I'm not sure, but I  

might have seen you before.

You  

needn't have bought so much food. I bought everything this morning.

I  

could have made one mistake in the test.

Объяснение: