Напишите их в вопросительной и отрицательной форме: 1. не was an economist. 2. they are young engineers. 3. we were students last year. 4. she will be a manager. 5. it is a nice building.

1. Was he an economist? He wasn't an economist.
2. Are they young engineers? The aren't young engineers.
3. Were we students last year? We weren't students last year.
4. Will she be a manager? She won't be a manager.
5.  Is it a nice building? It isn't a nice building.