--- What’s the number of students in your classroom? ---It’s about fifty. __________ of them are girls. A., Two third B. Two thirds C. Second third
---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