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investigate  
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KK:[ɪnˈvɛstǝˌɡеt] DJ:[inˈvеstiɡеit]

動變: 過去式:investigated  過去分詞:investigated  現在進行時:investigating  

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單選題

It was not until the police started to __ the homicide that they were able to identify the prime suspect.


對答案