know,have,try,sing,begin的过去分词是?

know,have,try,sing,begin的过去分词是? 开头是i have been sing here try to find myself 这首什么歌啊?RT wash.have.put.see.show.sing.try.make.grow的过去式 Let's have ______.A.the third try B.a third try C.third try If I ()(know) how to sing the song,I have enjoyed you that day have a try .take a try .have try .take try. -I‘m not good at singing,you know .-____WEI‘m not good at singing,you know .-____We are just for fun.Just have try.A.That's ok B.Come on. Now you know your a b c every body sing with He is often heard _______ the English song.A.to sing B.sing C.to have sung D.to be singing2.we don't know _____A.to do B.to be done C.what to do D.what to be doing我都知道答案,但是不明白这是什么原理.只句的语感是这样.希望大 Be careful and ____(A.not try to B.try not to C.don't try to D.not to try)have a fall on the ice. Who can answer this question?Let me ___,Mr Xu.A.have a try B.try on C.try it D.try it on Now let's have ( ) .Don't give it up soeasily.A.the second try B.second try C.a second try D.this second try为什么选C? Did Alex have fun-----at the party?Yes,he did.A.sing B.to sing C.singing Have you ever heard the Sarah Brightman __ you and me A to sing B sing C singing D sand If I (had know) how to sing the song,I would have joined you that day.为什么不是knew 一题简单的英语时态题目You won't know if it fits until you______ it on.A.had tried B.are trying C.have tried D.will try完成时不是这样用的啊 Please have a try. have a try