So sudden that the enemy had no time to escape.A. did the attackB. the attack didC. was t

问题补充：

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：

A. did the attack

B. the attack did

(答案→)C. was the attack

D. the attack was

解析：so…that 句式位于句首要部分倒装。