Подчеркните в каждом предложении модальный глагол. 1. I could speak French

Подчеркните в каждом предложении модальный глагол.
1. I could speak French quite well when I was at school. 2. You will have to contact them as soon as possible.
3. You mustnt talk about politics if they invite you to dinner.
4. I may not be in the office on that day.
5. You need to sign this form in two places, here and here.