Question

---You look so pale.What trouble you?

---I ______ my dead mother.

1. A.
   though about
2. B.
   was thinking about
3. C.
   have thought about
4. D.
   am thinking about

Answer 1

B
對過去的情況進行描述性的解釋，這種解釋答了問題的原因，A項答What did you do 的問題。C項沒有直接答問題，D項時態(tài)表達錯誤。