Поставьте предложения в отрицательную и вопросительную форму:
1.Our chief engineer spends much time on the sity.
2.It took much time to cross the Atlantic in the 19th centure.
3.The students of our department attend their lectures mostly in the morning.
4.The investors will furnish our laboratory with up-to-date equipment.
5.The scientist obtained similar results in all the experiments

1.Our chief engineer doesn't spend much time on the city(-)
does our chief engineer spend.......
2.It didn't take much.....
did it take......
3 The students of our don't......... (-)
Do the students of our.........?
4.The investors will not .......(-)
will the investors furnish our laboratory with .....?
5. The scientist didn't obtain similar........ (-)
Did the scientist obtain similar.........?