*41.Walter offered us a lift when he was leaving the office,but our work _____,we refusedthe offer.A.not being finished B.not having finished C.had not been finished D.was not finished 请帮忙翻译并分析.

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*41.Walter offered us a lift when he was leaving the office,but our work _____,we refusedthe offer.A.not being finished B.not having finished C.had not been finished D.was not finished 请帮忙翻译并分析.
*41.Walter offered us a lift when he was leaving the office,but our work _____,we refused
the offer.
A.not being finished
B.not having finished
C.had not been finished
D.was not finished
请帮忙翻译并分析.

*41.Walter offered us a lift when he was leaving the office,but our work _____,we refusedthe offer.A.not being finished B.not having finished C.had not been finished D.was not finished 请帮忙翻译并分析.
这里用的是独立主格结构,用分词形式作状语加上被动语态,所以答案选 A .