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
网友回答
A. did the attack
B. the attack did
(答案→)C. was the attack
D. the attack was
解析：本题考查倒装，so ..that.., such ..that..的句子结构中，若so, such 和与其所修饰的词置于句首，实行部分倒装，又sudden是形容词，作表语，所以选C。