________ Sunday morning, he cleaned his room. _______ the afternoon, he did his homework. __________ night, he watched Olympic Games.
Jane is high school student in the United States.
Tom studies _______. He _______plays with his friends.
—do you exercise? —Hardly ever.
I have ____________ homework to do and I’m _______ tired now.
The problem is _________ difficult ________ students can solve them.