时态题：once you_(make)a promise,you must keep it.请说明理由

时态题：once you_(make)a promise,you must keep it.请说明理由 once后面时态.１、Once he said that,I know he was lying.2.Once you have make a promise,you must carry it out.两句都对?once后面究竟完成时态还是一般时? 时态题：sorry,I_(not know)you_(be)here请说明原因 once a week用什么时态 3 You_ would not have made________(not make) such a mistake if you had been more careful. 英文中once a week用什么时态啊? once a day在句中应用什么时态 _(be) careless any more or you_(make) mistakes Nothing can change her once she下定决心make up her mNothing can change her once she下定决心make up her mind 用什么时态 once 用什么时态?懂的来.once/twive/ three times.单独出现用什么时态啊、那 once a week 呢 when you_ _ _3个空,you_ _两个空cross it at a zebra crossing. 翻译Once you make a promise ,you should keep it at once 什么时态标志 the president is to make a statement tomorrow.神马时态? i got to make a sign.是什么时态? Once you make a decision,the universe conspires to make it happen. be taken aback.是什么时态?They met once a month.是什么时态?如果是过去式,怎么没有标志词? [英语]几道时态填空提需要请教将括号里正确的时态填入：1.She___________(write)to her mother once a week.2.Early to rise and early to bed___________(make) a man healthy.3.Please wait for me until I ___________(come).4.If anyone__