Question

---Where did you put the car keys?

---Oh, I ________ I put them on the chair because the phone rang as I ________ in．

1. A.
   remembered; come
2. B.
   remembered; was coming
3. C.
   remember; come
4. D.
   remember; was coming

Answer 1

D
我现在记得，remember为现在时，when the phone rang为过去时，故进门的动作用过去进行时表示。