it`s easy to ____out this math problem

it`s easy to ____out this math problem It's not so easy to loving It's not easy to be everybody! it's not easy to do It's Easy To Remember 歌词 It's easy to say汉语翻译 一道easy英语选择题--I tried ____out the maths problem but I failed.--Why not ____ it some other way?A.working,to try doingB.to work ,try doingC.to work,try to doD.working,to try to do .it's easy to understand 还是.it's easy to understand it It's easy to get thirsty_____ it's too hot. It's easy to talk in English is'n it. It's not easy to be an astronaut’s son .. It's easy to understand the question为什么用TO? R :It's easy to say,but hard to do. It's _(easy) to say than to do. Well,it's comfortable,easy to keep clean,easy to keep warm,no need to paint it’s easy to say ,but it’s------- to do it It's never easy to admit you are wrong. They think it's easy to ride a