When     help, one often says, “Thank you”, or “It’s kind of you．”
A．offeringB．to offerC．to be offeredD．offered
D

試題分析：考查省略式，因為英語中如果主從句的主語一致的話，可以省略從句的主語和be動詞，when offered="when" (one) is offered help,句意是：當(dāng)一個人被提供幫助時，應(yīng)該說“謝謝”或者“你真好”。選D。
點(diǎn)評：省略式是重要的考點(diǎn)，要求一定是主從句主語一致的時候才可以，另外做題時，可以使用還原法，把句子完整的形式寫出來，在進(jìn)行省略。
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