6.6.13.1 choose the correct item.
1 you have to/mustn't eat a healthy breakfast
every morning.
2 you must/mustn't be careful with what you
eat.
3 we mustn't/have to exercise every day for
at least 30 minutes.
4 you must/mustn't go to the doctor when
you have a cold.

KoreanSun1109    3   21.01.2020 06:17    10