1) You must take all necessary things along with you before you start your trip
2) You mustn't be late for school . It's against the school regulations
3) You must take a lot of warm clothes when you go to Sapa in winter
4) I walked too much . I need to put a plaster on my foot
5) A sleeping bag is a large thick bag for sleeping in , especially when you are camping
6) Ha Long Bay is famous because its scenic roick formations
7) You must look at other students work . It's against the rules
8) where_is the coldest place in Vietnam?
9) Peter must finish this essay today . He's going out tomorrow
10) Which is langest, the West Lake or the Sword Lake?câu này mình ko chắc