高一英语选择题,急~~I _____ have watered the garden.It began to rain shortly after I finishedI _____ have watered the garden.It began to rain shortly after I finished.A、mustn"tB、needn"tC、couldn"tD、wouldn"t先翻译后解释

Question

高一英语选择题,急~~I _____ have watered the garden.It began to rain shortly after I finished
I _____ have watered the garden.It began to rain shortly after I finished.
A、mustn't
B、needn't
C、couldn't
D、wouldn't
先翻译后解释

Answer 1

B、needn't
从下文“.It began to rain shortly after I finished”“我淋完水后不久就开始下雨了”可见,这里指的是“没必要（在过去）浇水
表示"（过去）没必要做某事（而事实上已经做了）" 用【needn't have done sth】
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