新概念英语第二册Lesson 656. I heard someone_ the door.A. knock B. knocked at C. knocking in D. knocking at 7. It _ yesterday, because the road is wet.13. Mr King, would you mind _ the books there? A. put B. putting C. to put20.His mother _ with him for being so rude to their neighbors. A. is annoyed B. was annoying C. was annoyed D. annoyedI had_ got back to the kitchen_