Question

【题目】—I don't know ________next．
—You'd better finish your homework first．
A.what to do
B.how to do
C.when to do

Answer 1

【答案】A
【解析】结合答语“你最好先完成你的家庭作业”可知，我不知道接下来要做什么，故what to do符合题意。故选A。