The terrible accident __________ his careless driving. [ ]A..

The terrible accident __________ his careless driving. [ ]A.due to B.result inC.was due to D.result from

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The reason why he failed is _____ he was too careless. [ ]A..

The reason why he failed is _____ he was too careless.A. becauseB. that C. for D. because of

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The US president Obama said his country will sign a peace tr..

The US president Obama said his country will sign a peace treaty with the DPRK (朝鲜) _____ the latter gets rid of all its nuclear facilities.A. while B. even if C. so that D. provided

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_____ many millionaires recognize they are doing better than..

_____ many millionaires recognize they are doing better than average investors, some factors haveforcedthem to reassess what the term "wealthy" means to them.A. Because B. While C. As D. Since

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—Why,I didn’t get you on the phone.—We ________football o..

—Why,I didn’t get you on the phone.—We ________football on the playground when you phoned.A.must be playingB.must playC.must have playedD.must have been playing

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