Поставить последующие предложения в вопросительной и отрицательной форме: 1.They had a

1. Did they have a lecture on Physics yesterday? They didnt have a lecture on Physics yesterday. 

2. Is there a short-handed in the building of our Institute? There isnt a short-handed in the building of our Intitute.

3. Must I go to the Institute four times a week. I mustnt go to the Institute four times a week.

4. Will she be a book-keeper in three years? She will not be a book-keeper in three years.

5. Does she work at a department store? She doesnt work at a department store.