在职攻硕英语考试

【单选题】I am sorry. I ______ finished it by last Monday, but I have been too busy.
A、must have
B、may have
C、ought to have
D、might have

网考网参考答案：C
网考网解析：
[解析] 此题测试的是情态动词完成式的含义和用法。ought to have (done)具有虚拟含义，与should (not) have (done)类似，表示“本应该(本不该)做某事但实际上未做(做了)”，符合题意要求：“我应该上星期一前就做完这件事，可是我一直太忙了，真抱歉”；may have (done)和might have (done)“也许做了某事”，后者可能性更小；must have (done)表示对过去情况的肯定推测，均与句意不符。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>