公共英语一级
单选题He into the office building when the fire bell rang.
A．was going
B．goes
C．has gone
参考答案：C进入在线模考
本题考查动词时态。从句用过去时，主句用过去进行时。全句译为“当火警响起的时候，他正走进办公室。”
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