By the time Peter gets home, his father has left for London on business.
单选题By the time Peter gets home, his father has left for London on business.
A.had left
B.will leave
C.will have left
D.Leaves
参考答案：C
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答案解析：这句话的意思是：等彼得回到家的时候，他父亲己经出差去伦敦了。时间
状语by the time表示将来时间，常和将来完成时连用，表示在将来某一时间以前已经完成的动作。答案为C。
涉及考点
2020翻译三级综合能力考试大纲
一、词汇和语法
