---- What did Jack eat?---- He ________ an apple before he ________!A.ate; sleepsB.had eaten; sleptC.eats; was sleepingD.has eaten; slept
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B解析试题分析: 句意:杰克吃的什么,他在睡前吃了一个苹果。\eat 吃,sleep睡觉,根据What did Jack eat可知答句时态为过去时态,吃苹果与睡觉有时间先后,过去的过去用过去完成时,故选B。考点: 考查时态。