Задайте общий, разделительный, альтернативный и специальные вопросы к предложениям: 1)yesterday at the meeting 3 managers decided to invest a lot of money in engineering. 2)all the workers of this factory are at then conference now.

1)Yesterday at the meeting 3 managers decided to invest a lot of money in Engineering.
1. Did three managers decide to invest a lot of money in Engineering at the meeting yesterday?
 2. When did they decide to invest a lot of money in Engineering?
3 Yesterday at the meeting 3 managers decided to invest a lot of money in Engineering, didn’t they?
4 Yesterday at the meeting 3 managers decided to invest a lot of money in Engineering or automobile business?  

2) All the workers of this factory are at the conference now.
1.    Are all the workers of this factory at the conference now?
2.    Where are all the workers of this factory now?
3.    All the workers of this factory are at the conference now, aren’t they?
4.    All the workers of this factory are at the conference or at the concert now?