1) You need to work harder.
2) I must take this medicine three times a day.
3) All visitors' must report to Reception.
4) He needs to be careful.
5) Nurses have to wear a uniform.
6) I have to go now.
1) You need to work harder.
2) I must take this medicine three times a day.
3) All visitors' must report to Reception.
4) He needs to be careful.
5) Nurses have to wear a uniform.
6) I have to go now.