题目内容
【题目】So sudden ______ that the enemy had no time to escape．
A． did the attack
B． the attack did
C． was the attack
D． the attack was
【答案】C
【解析】袭击是如此突然以至于敌人没有时间逃跑。sudden 是形容词作表语，缺系动词was，所以这是主系表结构，故排除A和B ，又因在so．．．．that 句型中，so+ 形容词，前置时用部分倒装语序，故选C
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