The teacher ______ several times, but he still didn’t understand it.A.explained John the sentenceB.explained the sentence for JohnC.explained to John the sentenceD.explained about the sentence to John
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C解析这题考查词组：explain to sb sth“向某人解释”，句意是：老师向约翰解析了几次句子，但他还是不理解。选C。