Вспоминаем правило:

If /Past Simple---would/could

Применяем правило к заданию:

If we went( go прошед.вр) by car,we would arrive by 5p.m

You would not enjoy the film of you was my brother!

They would eat chocolate every day if their parents not stoped them.

if she spoke French,she would visit Paris

If I knew her email address,I would send her an e-mail.

2.1.Successful students need goal and believe

2.2.When I'm 18,I will able buy a car.

2.3.If my family was rich,I would not live there.

2.4. I don't mind learning more languages ,but I hate study.