[填空题]Much research bas been done on interviews in general but journalistic interviewing as a specific field has unfortunately ______.

[填空题]Much research bas been done on interviews in general but journalistic interviewing as a specific field has unfortunately ______.

[单项选择]All （ ） has alreadly been done.
A. can be done
B. should be done
C. that can be done
D. what should be done

[单项选择]What has recently been done to the space
A. The walls have been painted.
B. The walls have been separated.
C. A private office has been built.
D. Bathrooms have been added.

[填空题]Because little research had been done on the explanation of happiness, before going into the lab, Lyubomirsky had done some ______.

[填空题]Safety studies have been done on GM salmon.

[单项选择]Based on research that has been done regarding the relationship between deficits and interest rates it can be concluded that:（）
A. year-to-year data indicate a strong relationship between budget deficits and interest rates but over a more lengthy period, persistently large budget deficits do lead to higher interest rates as implied by the crowding-out model.
B. year-to-year data indicate a loose relationship between budget surpluses and interest rates but over a more lengthy period, persistently large budget deficits do lead to higher interest rates as implied by the crowding-out model.
C. year-to-year data indicate a loose relationship between budget deficits and interest rates but over a more lengthy period, persistently large budget deficits do lead to higher interest rates as implied by the crowding-out model.

[单项选择]The millions of calculations, had they been done by hand,（）all practical value by the time they were finisheD．
A. could lose
B. would have lost
C. might lose
D. ought to have lost

[单项选择]（　） has recently been done to improve the conditions of elementary schools, a large number of children are unable to go to school.
A. In spite of what
B. What
C. Despite
D. Though

[单项选择]A great deal has been done to remedy the situation.
A. maintain
B. improve
C. preserve
D. protect

[简答题]Research has also been done into the way people’s behavior changes in a number of small, seemingly unimportant ways when they lie. (Passage 1)

[填空题]What has been done to have fewer cars on the freeways
Asking several people to （）.

[单项选择]It is no use （　） what has been done.
A. to regret
B. regretted
C. regretting
D. regret