There is mistake in each of the following sentences, underline it then correct it

VI. There is mistake in each of the following sentences, underline it then correct it. (6pts)
1. Because his argument was so confused, few people understood it. __________________
2. To have a strong body and stay healthily, you should exercise regularly. __________________
3. Although his old age, Mark performed excellently in his latest film. __________________
4. Mrs. Dung soon got used to travel to work by bicycle. __________________
5. I never drink wine and he doesn’t, too. __________________
6. Discovery channel makes education funny for children all over the world. __________________