The people _____ the murderer everywhere when he suddenly _______ in the hospital.A.searched for; appearedB.were searching; was appearingC.were searching for; was appearedD.were searching for; appeared
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D解析appear出现，不能用于被动语态，根据句意选D，当他突然出现在医院时，人们正在到处寻找 这个凶手。