John's score on the test is the highest in his class, he ______ very hard. -题库考试答案搜索网

John's score on the test is the highest in his class, he ______ very hard.

单选题

2022-01-04 01:08

A、must have studied
B、should have studied
C、must study
D、should study

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正确答案

A

试题解析

本题考查虚拟语气的用法。根据题意：John 的考试成绩是最高的，故他肯定考试前努力了。must+have+过去分词，表示对过去的某事作出肯定语气的推测。故选 A。

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