"Have you heard that Peter failed again?"He ought to ______ (work) harder.have

游客2023-09-26  10

问题 "Have you heard that Peter failed again?"
He ought to ______ (work) harder.

选项

答案 have worked

解析 句意:他应该当时更努力工作。而实际上没有,这里是虚拟语气特殊形式。
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