―Twenty dollars, please! ― How terrible!―I to bring my wallet with me. A. was fo

 ―Twenty dollars, please!

   ― How terrible!―I ________ to bring my wallet with me.

   A. was forgetting                               B. forgot 

C. had forgotten                                D. am forgetting

试题答案

B 用过去时态表示动作forget发生在过去。