1. i (to write) an exercise now. 2. i (to do) my homework when my mother came. 3. he ( not to go) to the school yesterday. 4.he (not to sleep) now. 5. he (to by) a book yesterday. 6. what nick (to do) tomorrow& tom

1. I am writing an exercise now.
2. I was doing my homework when my mother came.
3. He didn't go to the school yesterday.
4. He is not sleeping now.
5. He bought a book yesterday.
6. What will Nick do tomorrow?