题目

.By the time Jack returned home from England, his son _____ from college. A . graduated B . has graduated C . had been graduating D . had graduated 答案: D 【详解】 本题考查动词时态。句意为 “ 当杰克从英国返回家时,他的儿子已经大学毕业了。 ”by the time 到 … 时候为止,一般与完成时连用。选 D 。
英语 试题推荐