题目内容
6. He was about to leave the office for home someone knocked the door and asked for some help.
A. until B. while
C. as D. when
6. D考查状语从句的连接词。句意：他正要离开办公室回家， 这时有人敲门求助。be about to do…when…意为"正要做某事……这时……"，是固定句型，选D。
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题目内容
6. He was about to leave the office for home someone knocked the door and asked for some help.
A. until B. while
C. as D. when
6. D考查状语从句的连接词。句意：他正要离开办公室回家， 这时有人敲门求助。be about to do…when…意为"正要做某事……这时……"，是固定句型，选D。