1. “I think a lot of public school systems fail to see___________importance of play，” says Auston Parks，___________assistant professor of early childhood education at the University of Georgia.

A. 不填； an B. the； 不填 C. an； an D. the； the

2. —Wait ___________I go back for my raincoat in the office.

—Dont bother. The weather report said it would clear up by noon.

A. while B. until C. before D. when

3. The future of life on Earth is tied to___________of the Sun， and over time， the Sun will become brighter and brighter.

A. that B. one C. some D. any

4. Look around a city at rush hours___________youll probably notice that most cars contain only one person， though they have seating for four and space for their luggage.

A. or B. but C. so D. and

5. Eagerly but carefully， the boys put on special equipment， preparing to dive into the ocean and see first-hand___________lies beneath the surface.

A. what B. where C. that D. how

6. After graduating from high school， Elvis recorded a song for his mother，___________attracted the attention of a producer.

A. who B. what C. which D. that

7. It was then， at breakfast before we made our journey down，___________my father said he was proud of me.

A. where B. when C. that D. which

8. We dont have any convincing evidence in our investigation___________he is the real criminal in the case.

A. how B. where C. which D. that

9. For some men out there women are seen as people who need to be rescued from___________is taking place in their lives.

A. that B. what C. who D. which

10. Lincoln， whose election caused the break-up of the Union，___________if Buchanan had not split his own party.

A. should not have been elected B. need not have been elected

C. can not have been elected D. would not have been elected

11. Many people who decide to run away think theyll find a life thats free of the troubles they have at home，___________theyre faced with different， bigger problems.

A. only to discover B. discovering C. to be discovered D. discovered

12. When___________into German， Pepsis popular slogan，“Come Alive with Pepsi” came out implying “Come Alive from the Grave”.

A. translating B. translated

C. having been translated D. being translated

13. When searching for jobs online， be sure to keep a parent or other adults___________of what youre doing.

A. informed B. informing C. to inform D. being informed

14. Much close as___________to the Arctic， some parts of Iceland are brilliantly green at the right time of year. Anyhow， it has never been called “Green Land”.

A. they are B. are they C. it is D. is it

15. To be responsible for how one feels is one thing and yet it is quite___________to feel responsible for how other people feel.

A. the other B. another C. others D. other

16. A new research suggests that keeping the mind active___________the health of the brain， even in old age.

A. preserving B. preserves C. should preserve D. preserved

17. By the time a baby takes its first breath， many of the key pathways between nerves .

A. were made B. is being made C. have been made D. will be made

18. —Miss， you___________17 dresses in three hours， but would you like to buy one？

—Of course not. I thought this was the only way I could wear them when I saw the price.

A. have tried B. tried C. will try D. are trying

19. If one was to take a look at their fellow human beings， it would be clear that they___________all separate.

A.were B. will be C. are D. be

20. —What were you up to when she dropped in？

—I___________for a while and___________some reading.

A. had played； did B. played； did

C. had played； was going to do D. was playing； was going to do