问题
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The school conducted a(n) __________ investigation on the accident.A、positiveB、extensive
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During the investigation, two detectives_____the identities of antiques dealers.A.assumedB
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The policemen are investigating the murder______.A.eventB.caseC.incidentD.accident
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They thought the program was ______ investigating
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The main difference between the investigation and the previous ones is that ______.A.the r
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The investigation ________ will soon be published was made by John.