A.Twenty—one
B.Twentieth—one
C.Twentieth—first
D.Twenty—first
A.A number; Three—fourth
B.The number; Three quarters
C.A number; Three—fourths
D.The number; Three fours
开始考试点击查看答案A.A. third
B.the third
C.a third
D.a thirds
开始考试点击查看答案A.on October the first, 1949
B.in October the first,1949
C.on 1949 October one
D.in October one, 1949
开始考试点击查看答案A.is offered
B.has offered
C.are offered
D.have offered
开始考试点击查看答案A.a three day sick leave
B.three days sick leaves
C.a sick leave of three days
D.three—day sick leaves
开始考试点击查看答案A.nineteen eighty—five
B.one nine eight five
C.nineteen eighty five
D.nineteen eighty—fifth
开始考试点击查看答案A.thirtieth
B.thirty
C.thirty's
D.thirties
开始考试点击查看答案A.dozen of
B.dozens
C.dozen
D.dozens of
开始考试点击查看答案A.hundred
B.hundreds of
C.hundreds
D.a hundred of
开始考试点击查看答案A.sixty percent
B.sixty percent of
C.percent sixty
D.sixty percents of
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