Напишите предложения в отрицательной форме:
1. This engineer’s report contains very interesting data. 2. A group of workers went to Africa last summer. 3. Seeing is understanding. 4. They will have been working at this problem for two months. 5. Harry’s shop has a large territory.

1.This engineer's report doesn't contain very interesting data. 2.A group of workers didn't go to Africa last summer. 3.Seeing isn't understanding.4.They will not have been working at this problem for two months. 5.Harry's shop hasn't a large territory.