Question

---Come on，Kitty.
---Oh, good heavens! Both my legs are nearly to give out. I_______ for hours like a dog

1. A.
   have been walking
2. B.
   had walked
3. C.
   was walking
4. D.
   walked

Answer 1

A
本题考查动词时态。根据句中的my legs are nearly to give out可知本题应该使用现在完成进行时，表示答话人一直走了几个小时的路，因此腿上没有一点儿力气了。