Подставьте модальный глагол must или его эквивалент have to в нужной временной форме. 1. students … work hard at their english. 2. yesterday i … revise all grammar rules for the test. 3. all of us … be in time for classes. 4. you … meet them next week. 5. we … not cross the street here. it is dangerous!
2 had to revise
3 must be in time
4 have to meet them
5 must not