You were silly not _______ your car.
A. to lock B. to have locked
C. locking D. having locked
You were silly not _______ your car.
A. to lock B. to have locked
C. locking D. having locked
B
此题考查如何用不定式体现时态。要体现不定式的动作先于或应该先于谓语动词之前发生,该不定式要用完成形式。