I _____ the prolem until he explaind it.A.understood B.did not understand C.had not understood D.had understood

I _____ the prolem until he explaind it.A.understood B.did not understand C.had not understood D.had understood There is___'u',___'n',_____'i'and____'l' in the word'until'.(填冠词) It's u _____ the chair.填空 I _____ ____ know the _____ _____ the question. Since the 1st day I saw u I like u U know People in the U.S speak _____ English. The way I memory with U Do u like the way i move? 英语翻译John was driving when a policeman pulled him over .He rolled down his window and said to the officer,Is there a prolem,OfficerNo problem at all.I just saw your safe driving,And I am happy to award(授予奖金) you a MYM5,000 Safe Driv I _____ _____（有）the book Harry Potter _____ I _____ (be) happy when she gets the present? I like the blue one.对“blue”提问!格式为“_____ _____ _____ you _____?” I got the news on _____ radio I _____(经过)the market this morning I like _____(play) on the swing I am busy _____ (read) the book i _____ off the tree yesterday afternoon i _____ watch tv in the evening.