问题描述：
——What’s wrong with you, Granny? ——I lost the way. I don’t know ______ next.
A. how to do
B. what to do
C. why to do
D. where to do
A. how to do
B. what to do
C. why to do
D. where to do
问题解答：
我来补答展开全文阅读