We can’t fix this machine well. Can you show us ? A. how to do B. what to do it C. how to

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。