--What’s it used for?--It’s used for________.

--What’s it used for?--It’s used for________. what's for it used what's for it used连词成句 It's used for v.ing. 英语翻译What's it used for?It's _____ _____ _____ metal what is it used for What is it used for? What's the machine used _____ It's used to ____ disabled peo what can't be used until it's broken It's used for _____ _____ _____(探索太空） What's full when it's used and empty when it's at rest? 脑筋急转弯:what is full when it's used and empty when it's at res