两道英语填空题,
问题描述：
两道英语填空题,
1.I think ( ) is good for our healthy.
A.walk B.walking C.walks D.to kalk
-------------------请告诉我为什么这么选?
2.She has a sore back.（划线提问）
---
a sore back.
---- ----
答
B 动名词作谓语
What does she have?