1.Maybe he is not at home now.(同义句替换)

1.Maybe he is not at home now.(同义句替换)
He_not_at home now.
2.He is healthier than his classmates.(同义句替换)
He is_ _ in his class.
3.Vegetables help you to keep healthy.(同义句替换)
Vegetables help you to_ _ _ _.
(备注:"_"为填空处,一空一词)