北京友谊医院挂号费:一道高中英语题.

来源:百度文库 编辑:神马品牌网 时间:2024/05/13 05:58:10
____the TV play,he got down to__his homework.
A.Watching ;do B. Having watched; doing
C.Watched; doing D.After his watching ;do
选什么?为什么?

b

因为主语是人he,所以不能用c,get down to后面要用到doing
所以选择b

B