1 Scientists predict that the sun will die in the distant future.
2 Luke is very competitive and loves to win when he plays sports.
3 What are we doing this evening? Let's go out for dinner.
4 Air is composed of about 78 percent nitrogen and only about 21 percent oxygen.
5 After a long day of work, my father often returns home tired and sleepy.
6 A laser beam consists of a concentration of pure light.
7 Better standards of healthcare mean that people live longer than they used to.
8 In twenty years' time, most people will use the Internet.
9 Despite all my efforts, I will not make the report ready by tomorrow.
10 The voyage will resume next week after the weather becomes more stable.
11 Who assumes the responsibility for housework in your home, your mother or another person?
12 Today after I get out of class, I will go to a movie with some friends.
13 He will take a dancing contest next week. He has been practicing strictly for weeks.
14 When Melanie came into the office yesterday, her eyes were red and watery. I think she was crying.