1. She looks much older than him. Theybe twins.
2. They look like tourists themselves, but they be able to show us the way
3. He drives a Ferrari. Hebe rich.
4. He can't speak Spanish. He be from Mexico.
5. Well, helike his job. He has been working here for 20 years.
6. I think she has seen the film before so she want to see it again.
7. I don't believe her. She ... not have failed to recognize me.
8. Ile ... have understood us, for he nodded his head.
9. You ... not have seen him at the meeting. He was ill.
10. Buy the dictionary. You ... need it one day.

Ex 4 Use the appropriate infinitive form:
1. It's obvious, that the math test must (to cheat) by him. He is poor at math.
2. The children must (to play) since early morning.
3. He can't (to do) all his homework yesterday. He is lazy bones.
4. She must (to work) at this problem since she came here.
5. He may (to lose) his key and couldn't get into the flat.
6. You can't (to rely on weather. It can change any time.
7. They can't (to miss) the plane. They took a taxi to the airport.
8. All the puppies must (to play) together now.
9. It might (to be) cold in England at any season.
10. The meat steak must (to burn) It looks and smells terrible.