once they have been told,they are halfway there翻译汉语

They have been here once.把been换成came怎么样 They have been to Beijing only once.对only once提问 they have been to the summer palace only once（only once划线提问） once they have been told,they are halfway there翻译汉语 all the deer raised here have been domesticated from those in the wildA once living B once they lived C once lived D that once lived Where have they been? All of the plants now raised on farms have been developed from plants___wild.A.once they grew B.they grew once C.that once grew D.once grew答案选什么?为什么? my father and my mother have been married for30years,and never once-----with each othera have they quarreledb did they quarrel为什么不能选B 用过去时 They change once I have regained They have a____ been there the old couple have been married for 40years and never once ( )with each other .A they had quarrelthe old couple have been married for 40years and never once ( )with each other .A they had quarreledB they have quarreled C have they quarreledD had the 这句话的后半句是什么意思Every week the couple go to the theatre.Not once have they been to the movies since they arrived here. I have been loving a man once very much 是什么意思 翻译You have only been to school once. people who have once been poor这句话啥意思? 1.All of the plants now raised on farms have been developed from plans_______wild.A.that once grew B.once they grew C.they grew once D.once grew选 A没看懂是啥意思2.If only she _______at that time that the disease was curable.A.knew B.knows C. what have they been doing 是什么时态 What places have they been?怎么翻译?