改病句：what is used for move the cursor around the screen

改病句：what is used for move the cursor around the screen what is it used for改宾语从句i wonder. What is it used for? What is that Engilsh?改病句 What is a computer used for?意思 What is a pen used for? what is this questionnaire used for? what is paper used _____(for/to) What is small talkused for What is small talkused for what is a coaster used for? what is this?It'scolck.（改病句） What is you thinking about?改病句急用! 英语翻译 What is the money of his hair used for 求what is it used for?的意思 What does a paper boy do what does a tour guide do what is a heater used for?what is an air conditioner used for? what's for it used what is like 病句 ?