You needn't have apologized for your absence—________， it's hardly your fault.
A．thereforeB．however
C．meanwhileD．besides
D
D 考察副詞辨析。句意：你不必為你的缺席道歉，而且這不是你的錯(cuò)。Therefore因此，表示因果；however然而，表示轉(zhuǎn)折；meanwhile同時(shí)，表示并列；besides此外，表示遞進(jìn)。根據(jù)句意說(shuō)明D正確。
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