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, that’s _______ he worked so hard all the time, so his efforts paid off. A. why B. because C. how D. what 剖析: 根據(jù)語境,前者說的是結(jié)果 “他被北京大學(xué)錄取 ”,后者解釋原因,所以用 because。 [來源 :學(xué)科網(wǎng) ZXXK] 答案: B 3. Is this the reason ________ she explained in the report for her success in the job? A. what B. that C. how D. why 剖析: 考查定語從句。因此處關(guān)系詞代替先行詞在定語從句中作賓語,故只能用 that, which 或省略。 答案: B