If you feel tired, you may stop       .

--- What’s the matter, Mary? You looked upset.--- I failed again in my math exam. I’m really sorry because I don’t want to ____ my parents down.

I had to          my little sister when my mother was not at home.

 ---How are you going to become a basketball player? ---I’m going to __________ every day.

Not only you but also Mary ______to ______after-school activities.