Помогите пожалуйста с английским, нужно открыть скобки в нужной форме:1. The

Помогите пожалуйста с английским, необходимо открыть скобки в подходящей форме:
1. The letter (to write) now.
2. This machine (to test) now.
3. New subjects (to study) next year.
4. He said that (to be) a good specialist.
5. He told that he (to do) this work himself.
6. We saw that our teacher just (to go out).
7. He says that (to be) an engineer.
8. We have a picnic tomorrow if it (be) a fine day.
9. I (wait) for you until you (come) back from college.
10. The conference (to hold) in May.
11. Machine - tools (to use) to shape metals and other materials.