Question

【题目】—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

Answer 1

【答案】B
【解析】句意：—你怎么了？—我不能决定下一步该做什么。A. how 为疑问副词， 句子缺少宾语； B. C. 句中what作do的宾语，it多余；D. 语序不正确。所以答案是B。