—Most people said the film Let The Bullets Fly was wonderful _____ they watched it.—I agree with them, and I like it very much!
A：before
B：if
C：since
D：after
根据生态学原理，要使能量流经食物链的总消耗量降到最低，人们应采取下列哪一种食物结构（ ）
澳大利亚大陆（南半球）的中心地带月均温最高值出现的月份是（ ）
—Sorry，sir.I haven’ t finished writing the report.
—Oh，but you________ have done it because yesterday was the deadline.
