---What does Tu Youyou do?
---She has ___________ a scientist for over thirty years.
A. played for B. worked as C. stayed with
This kind of magazine _________ well in the store. If you want to buy one, you must go there early.
A. sounds B. watches C. sells
Some precious(珍贵的) animals ____________ because of people’s killing.
A. died from B. put out C. died out
To ______________something is to produce or design it that has not existed before.
A. invent B. discover C. Find
To______________ one’s salary is to make the salary become twice as much as before.
A. double B. increase C. cut
A ______________ is the award given to the winner of a game.
A. gold B. prize C. Present
