问题补充:
---I don’t know . Can you help me? ---I think you should calm down and read texts.
A. how to do
B. what to do it
C. what to do
D. when to do
答案:
A. how to do
B. what to do it
(答案→)C. what to do
D. when to do
解析:句意:我不知道该做什么。你能帮助我们吗?我认为你应该冷静下来,读一下说明。疑问词+to do的结构。如何去做:how to do it .做什么:what to do何时去做:when to do .