单选题Ioftendomyhomework________Sundaye

单选题 I often do my homework ________ Sunday evening．A.inB.onC.atD.for

B解析在早上，在下午，在晚上应该说in the morning, in the afternoon, in the evening．如果在morning, afternoon, evening等词的前面有修饰语，则应该用介词on．例如：on Monday morning, on a cold evening, on a summer afternoon等．

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