выпишите сказуемые, содержащие модальные глаголы с перфектным инфинитивом.

1. He spent three weeks on the work that should have taken only a day or two.
2. Mike isn’t home yet. He must have been held up at work.
3. Nobody knows when the documents disappeared. They might have been stolen.
4. He can’t have forgotten about the meeting. He talked to me about it only this morning.
5. I don’t know why they are so late. They could have got lost.