Помогите с заданиями, пожалуйста. Изберите подходящую форму глагола to be. 1.

Помогите с заданиями, пожалуйста. Изберите нужную форму глагола to be.
1. Out group (am, is, are) not large, we ( am, is, are) 10 now.
2. She ( is, was, will be) a professor at Harvard 2 years ago.
3. We ( are, were, will be) the second-year students next year.
Напишите предложения в аопросительной, а затем в отрицательной форме.
1. Many cities have colleges and universities
2. I had some difficulty with pronunciation last term.
3. Student will have good knowledge in different subjects at the end of study.