Sally is my best friend.We often help with schoolwork.(相互)
Her home is the closest to school,so she often (走路) to school.
She plays the piano (好)than Sam does.
His (能力)in swimming was noticed by the coach.
He is a (仔细的;认真的) boy.
健康取决于食物、锻炼和足够的睡眠。
Health depends on food,exercise and .