Ex1:
1. They do a lot of sport activities like: running, swimming, cycling, doing aerobics ...
2. Because a lot of strong men and women participate in this competition.
Ex3:
1. Do more exercise
2. Sleep more
3. Eat less junk food
Ex4:
1. T 2. F 3. F 4. F 5. T
Ex5:
1. Because you have to do more. You have to do 3 activities: swim, run, and ride a bike.
2. Yes, that is badminton. It is easier than triathlons.
3. Yes, I think this will be more challenging.
Ex6:
1. C 2. B 3. A
