题目内容:
Directions:There are l5 incomplete sentences in this section.For each sentencethere are four choices marked A,B,C andD.Choose one answer mat best completes thesentence and blacken the corresponding letter on ANSWER SHEET I.( )All that Call beDone__________. A.have beenDone
B.haveDone
C.has beenDone
D.hasDone
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答案解析: