You can't go to the party. ('can'-модальный глагол и может справляться без 'do'.)He must take his dog for a walk. (В конце модальных гл.-ов не нужно окончание "-s" для 3 л., ед. ч.)I can help you. (после модальных гл.-ов не используется инфинитив)He must not be late. ('must' в отрицании выглядит как 'mustn't')Can his brother speak French? (см. 2)Paul must go there. (см. 3)You must not smoke here. (см. 4)Actors can learn a lot of dialogues by heart. (уместно использовать 'can')Your glass is empty. Can I refill it? (см. 8)Might I introduce Mr. Brown to you? (уместно использовать 'might')My sister can play a few musical instruments. (см. 3)Some years ago I couldn't speak English. (см. 1)
Hydro-electric power, powerful storms, mountain range, make up, volcanic activity, famous sight.
1. Every year, many powerful storms form out in the Pacific Ocean.
2. There is a lot of volcanic activity in the Pacific Ocean. Islands such as Hawaii and Tonga have lots of volcanos on them.
3. Niagara Falls is a very famous sight in North America.
4. Niagara Falls is the largest producer of hydro-electric power in the world.
5. The Mid-Atlantic Ridge is a mountain range under the Atlantic Ocean.
6. Five major oceans make up most of our planet.
You are welcome!)