Помогите, пожалуйста, сделать ДЗ по Английскому языку!

Turn the 1st and 3rd sentences into Past Indefinite and the 2nd and 4th - into Future Indefinite:

1. Many students want to join the Foreign Language Society. 2. My friend always helps me to learn Anatomy. 3. He does not study French as he studies English. 4. Medical students study many clinical subjects in the fourth year.

1many studens wanted to join the..2my friend will help me..3..as he studied English.4...students will study clinical ..