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He told John to stay in bed until he ____ well enough to work A.feels B.felt

题目详情
He told John to stay in bed until he ____ well enough to work A.feels B.felt
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答案和解析
B
主句是一般过去时 told(过去式)
时间状语从句until “直到..”,与主句使用一致时态,过去时,所以felt