题目内容
John promised his doctor he ____ not smoke, and he has never smoked ever since.
A. might B. should C. could D. would
D
句意: 约翰答应他的医生不再吸烟了, 且从那时起就再也没有吸。might not可能不; should not不应该; could not不可能(推测), 不能(表能力); would有“决心、决意”等意思。根据句意, 可知D项正确。

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