A.It is boring to do different kinds of exercise.B.It is quite necessary for the sake of health.C.It is totally confused to choose the right one.D.It is hard to follow the experts’ suggestion.
A.It is boring to do different kinds of exercise.
B.It is quite necessary for the sake of health.
C.It is totally confused to choose the right one.
D.It is hard to follow the experts’ suggestion.