问题
选择题
He was about to tell me the secret _________ someone patted him on the shoulder.
A．as
B．until
C．while
D．when
答案
答案：D
考查固定结构。Be about to do sth when…正要做某事在这时出现了意料之外的事情。句意：他正要告诉我那个秘密在这时有人拍了他的肩膀。
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