By the time she reached the corner of the street, the footsteps _________.A.had

By the time she reached the corner of the street, the footsteps _________.A.had

题型:不详难度:来源:

By the time she reached the corner of the street, the footsteps _________.
A.had goneB.were goneC.are missing D.have disappeared

答案
B
解析

举一反三

Up to now, the weather______ pleasant for the journey. I hope our good luck will continue.
A.isB.wasC.has been D.will be

题型:不详难度:| 查看答案

. Jane Goodall with her assistants ______ for the forests to learn more about the chimps.
A.are setting offB.is setting offC.have set off D.sets off

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His daughter was disabled after a serious illness in 2003 and in the last seven years, he     
money to help those children like his daughter.
A.has raisedB.has been raisingC.had raisedD.was raising

题型:不详难度:| 查看答案

With the rapid growth of population, the city______ in all directions in the past five years.
A.spreadsB.has spreadC.spreadD.had spread

题型:不详难度:| 查看答案

. By the year 2020 scientists _____ a lot of research on AIDS.
A.had doneB.doC.are doingD.will have done

题型:不详难度:| 查看答案
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