College is _______ time when you can learn many new skills, including how to live and work with_______ people from different backgrounds.
Scott usually gets up at 6:10, then he cleans _______ room.
— What can you see on the desk? — I can see _______ pen.
My sister isn’t in. ________ she comes back, I’ll let her call you back.
Not only Lucy’s brothers but also Lucy herself ________ living in China now.
Everyone is here. Let’s ________ our class now.