问题补充：
They were very excited to see the baby tiger by the mother dog.
A. take good care of
B. taking little care of
C. taken good care of
D. to take some care of
答案：
A. take good care of
B. taking little care of
(答案→)C. taken good care of
D. to take some care of
解析：“他们非常高兴看到小老虎被母狗照顾”
See sb do / see sb doing/ see sth done
这个考的是see sth done
