1. The temperature of the water is 430C.
The temperature of the water isn't 430C.
Is the temperature of the water 430C?
2. Mr. Hall has some - ТУТ SOME А НЕ COME -assistants.
Has Mr. Hall any assistants? - Mr. Hall has no assistants. или
Does Mr. Hall have any assistants? - Mr. Hall doesn't have any assistants.
3. There was somebody in the laboratory in the morning.
There was somebody in the laboratory in the morning. -
Was there anybody in the laboratory in the morning?
There was nobody in the laboratory in the morning. или There wasn't anybody in the laboratory in the morning.