1. I have not come back from a business trip.
2. I wonder why he is not late.
3. It was not strange!
4. There is no truth in her words.
5. But she does not know Norman.
6. Now the explanation makes no sense.
7. The topic will not lose its significance by that time.
8. This certainly will not be great fun.
9. Then he did notsound very cheerful, too.
10. We were not lucky because did not catch the five o’clock liner.
11. The text is not to be revised, of course.
12. Ann will not be coming, too.
13. A ball-pen like this cannot be found anywhere.
14. I wasn't puzzled by any things.
15. Mary and John do not fetch dictionaries.
My sister taught herself to swim.
Anna repaired the chair herself.
The children are making themselves something to eat.
I hurt myself when I fell down the stairs.
We're meeting at 8.00 this evening.
We're enjoying ourselves very much.
Объяснение: