解析：John ______ he could improve his ex_考试试题_专升本

【单选题】John ______ he could improve his exam results, but he did not have enough time to study.
A、knows how
B、knows that
C、knew how
D、knew that
网考网参考答案：C
网考网解析：
考查时态和连词。根据从句可判断为过去时，排除选项A和B。how表示“如何”，符合题意。选项C是正确的。句意为：“约翰知道如何提高考试成绩，就是没有足够的时间学习。” document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>