Allen has decided that he will be an engineer by the time he..

Allen has decided that he will be an engineer by the time he ________ twenty.A.had beenB.is going to beC.will beD.is

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(2014·山东省实验中学一模)—Have you graduated from Shandong U..

(2014·山东省实验中学一模)—Have you graduated from Shandong University?—Yes.I________there for 4 years.A.studied B.have studiedC.had studied D.have been studying

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—What were you doing when Lucy ________in yesterday?—I had ..

—What were you doing when Lucy ________in yesterday?—I had just finished my homework and ________to take a shower.A.dropping;startB.had dropped;startedC.dropped;have startedD.dropped;was starting

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—Have you known Dr. Jackson for a long time?—Yes,since sh..

—Have you known Dr. Jackson for a long time?—Yes,since she ________ the Chinese Society. A.has joinedB.joinsC.had joinedD.joined

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When I met him the other day,it was the first time we______..

When I met him the other day,it was the first time we________each other since we were at school.A.sawB.have seenC.had seenD.were seeing

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