Is it Sam's dog? Can Sam swim?
1. vitamins is biologically active additive for people. vitamins are need for make better people's health. also vitamins are need for small children, for make better immunity.
2. vitamins are need for make better people's health, memory and immunity.
3. people must eat healthy food. for example, dishes from fruits, vegetables, or fruits and vegetables in its pure form.
Кто,когда,где,что,сколько, сколько
1) He is proven to be a good athlete
2) They are thought to know more
3) She seems to think that it's his fault