The room (be on)______ fire for five minutes when I got there.had been on本题考查动词时

游客2023-10-06  28

问题 The room (be on)______ fire for five minutes when I got there.

选项

答案 had been on

解析 本题考查动词时态。for five minutes为一时间段,表明动作持续的时间,应用完成时。句中时间状语从句是一般过去时,主句的动作发生在从句之前,因此用过去完成时。
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