3.The university is saving 300,000per year by its energy ______ efforts.( )
A. | consumption | B. | conservation | C. | suspension | D. | prohibition |
2.-Mary,how did your Math test go?
-I had thought I _________,but in fact I came in the top 10in my class.( )
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-I had thought I _________,but in fact I came in the top 10in my class.( )
A. | should have failed | B. | couldn't have failed | ||
C. | might have failed | D. | shouldn't have failed |