There's no light on-they ____ be at home

免费题库2022-08-02  18

问题 There's no light on-they ____ be at home.A. can't B. mustn't C. needn't D. shouldn't

选项 A. can't
B. mustn't
C. needn't
D. shouldn't

答案 A

解析 本题考查情态动词。句意:那里没有光,他们不可能在家。can't表示对现在情况的猜测或判断,意为“不可能”。mustn't表示“禁止,不准”,不用于表示猜测、推测或判断。needn't意为“没必要”,表示没有必要做某事。Shouldn't意为“不应该”表示不应该做。
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