问题补充:
We can’t fix this machine well. Can you show us ?
A. how to do
B. what to do it
C. how to do it
D. where to do
答案:
A. how to do
B. what to do it
(答案→)C. how to do it
D. where to do
解析:句意:我们不能修理好这台机器,你能给我们展示一下如何去修理它吗?what to do 做什么;how to do sth 如何做某事;where to do sth 到哪里去做某事。根据句意,故选C。