—What’s wrong with you?
—I can’t decide ______ next.
A. how to do B. what to do
C. what to do it D. how can I do
—What’s wrong with you?
—I can’t decide ______ next.
A. how to do B. what to do
C. what to do it D. how can I do
B what to do作宾语时，what充当to do逻辑上的宾语，故to do后不再加宾语。由题意“我不确定接下来做什么”可知选B。