3.Lake Superior in North America is a freshwater lake; it is larger than any other freshwater lakes in the world. Lake Superior in North America is .
4.Remember to bring the compass: if not we will get lost in the forest.
You must .
5.Take a waterproof coat during your trip to Fansipan Mountain because it is rainy there.
You .
6.It is very important that you arrive on time at school.
.
7.It is very dangerous to walk alone after 10 pm in that park.
You .
8.Taking a boat trip around the islands in Ha Long Bay is the most important thing of the trip.
You .
9.Antarctica is colder than any other place in the world.
Antarctica is .
10.It is wrong of us to write on the walls or tables in our classroom.