◎ 题干
— Jim, have you finished reading the novel?
— No. I _____ my father on the farm all day yesterday.
A. would help
B. was helping
C. had helped
D. have been helping
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“— Jim, have you finished reading the novel? — No. I _____my father on the farm all day yesterday. [ ]A. would help B. was helping C. had helpedD. have bee…”主要考查了你对  【过去进行时】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。