He can’t have left.
Can (Could) he have translated the whole book?
It can’t be cold outside: the thermometer says (reads) fifteen degrees.
He could not get the book because the library was closed.
He can’t (could not) have got the book: the library was closed.
Could you show us the way to the stadium?
She can’t have broken her leg.
I won’t go for a walk: she may ring me up.
Where are my books? — I don’t know. Natasha may have put them in the bookcase.
She can’t (could not) have broken the glass: she is so careful.
It is very cold today: it may snow.
Mike may come later.
I have been looking for my literature exercise book for an hour. I can’t (could not) have left it at school. — You may have given it to Kate.
They may have been studying French for a long time.
My brother may come today.
She may have gone to the country.
We might have met with him in Novgorod, but I don’t remember it.
She may be trying to call us now but she can’t get through to us: our telephone is broken (out of order).
She can’t (could not) have finished this work so soon. She may have done only half of it.
You can’t (could not) have lost the money. You may have put it into your bag. — No, it is not in the bag. I may have dropped it in the shop.