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theteacheraskedif/whetherweknewwhereWangFangwas这里的knew是know还是knew

题目详情
the teacher asked if /whether we knew where Wang Fang was 这里的knew是know还是knew
▼优质解答
答案和解析
asked过去时态:带宾语从句的谓语如果是过去时,宾语从句应使用与过去有关的时态.所以,应该用knew或者had known