17．----I thought Jack was going to join the Air Force. ----Didn't you hear he failed the musica——青夏教育精英家教网—

摘要：17．----I thought Jack was going to join the Air Force. ----Didn't you hear he failed the musical examination? A．to pass B．passing C．in passing D．to have passed

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--I thought Jack was going to join the Air Force.