Поставьте глаголы в следующих предложениях в утвердительную, вопросительную и отрицательную формы Present Simple.
1. I (to do) morning exercises.
2. He (to work) at a factory.
3. She (to sleep) after dinner.
4. We (to work) part-time.
5. They (to drink) tea every day.
6. Mike (to be) a student.
7. Helen (to have) a car.
8. You (to be) a good friend.
9. You (to be) good friends.
10. It (to be) difficult to remember everything.