1.Is the temperature of water 43 C?
Is the temperature of water 43C or 50C?
The temperature of water is 43C,isn`t it?
2.Does MrHall Have some assistents ?
MrHall has someassistents,doesn`t he?
Does MrHall have some assistents or some collegues?
Why does mrHall have some assistents/?
How many assistents does MrHall have?
3.Was there somebody in the laboratory in the morning?
There was somebody in the laboratory in the morning,wasn`t there?
Was There somebody in the laboratory in the morning or in the afternoon?
Why was there somebody in the laboratory?
When was there somebody in the laboratory?
Who was there in the laboratory?
4.Do all students pass exams at the end of each term?
All students pass exams at the end of every term,don`t they?
Do all students pass exams at the end of each tern or at the end of every year?
Why do all students pass exams ?
When do all students pass exams?
How often do students pass exams?