Вставьте в предложения подходящие по смыслу модальные глаголы must, should, can, to have to в нужной временной форме.
1. We _______ stay at home. The weather is bad.
2. You _______ tell your mother the truth.
3. _______ you speak English when you were six?
4. I _______ go. It's late already.