Điền từ HAVE TO hoặc MUST (not)

Bài 1: Điền từ HAVE TO hoặc MUST (not)
1. The dress is a little bit tight. You may ________ try on a few different sizes. 
2. The students _____ get here after 4.pm because the school will begin at 4pm. 
3. Do you _____ work next weekend?
4. Drivers_____ remember to signal when they turn.
5. John!! You _____ leave your clothes all over the bed like that!!
6. Did you_____finish your exercises yesterday. 
7. Last month, I ______ go to the hospital twice a week.
8. I______ go now, it’s too late.