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I would ask Jim to lend me the money if I_him.a.knew b.had knownc.have konwnd.know选择哪一个?请详细说明下原因,

题目详情
I would ask Jim to lend me the money if I_him.
a.knew
b.had known
c.have konwn
d.know
选择哪一个?请详细说明下原因,
▼优质解答
答案和解析
a
虚拟语气
表与现在相反的语气时用过去式