we ought to stock up on the film before our trip .为什么有onstock up 备足...你帮我把所有on的用法都列一遍吧举几个句子谢谢啦

we ought to stock up on the film before our trip .为什么有onstock up 备足...你帮我把所有on的用法都列一遍吧举几个句子谢谢啦 The porter ______ the fire-brigade as soon as he saw the fire in the stock,which went up in smoke.A.ought to callB.ought to have called C.should callD.should have calling 反义疑问句shoule we 和ought to we 都行吗? ----Rose gave up trying yewterday.----She____to have done that A shouldn'tB ought C ought to not D ought not we ought to exercise every day to keep_______中文是什么意思 what we ought to do to do well for our ought to stock up on --He hasn't gone to the office up to now --well.he ____.A.ought to B.ought to have We ought to save energy .改为同义句 We ought to be there by nine twenty.中文翻译 We ought to be getting back .这是什么时态,什么句式的.和we ought to get back . 英语翻译Thank you for your enquiry.We have a stock of 1000 of DP122 which we are selling off as US$20 each.We can offer a quantity discount of up to 10% and prepared to give 15% discount for an offer to buy the complete stock.Our product price wi One ought to live up to what he knows to be right. When we got to the cinema,the film had already started.I __________ there earlier.A.ought to have got B.ought to get C.ought to getting D.ought have got We have done thing we ought not to have done and___undone things we ought to have done.A.left B.leave C.will leave D.leaving We have done thing we ought not to have done and___undone things we ought to have done.A.left B.leaving.为什么是A,B为什么不可以 We ought to go ,的反意疑问句,是oughtn't we还是ought we not?答案给的是“ought we not?我也觉得是oughtn't we