１.Shirly___a book about China last year but I don't know whether she has finished it.A.wrote B.was writing这到题选Ｂ，为什么？last year在这里不是过去的意思吗？2.I don't think Jim saw me; he____into space.A.was just staring B.had just stared这道题选Ａ，为什么？３．Many people agree that____knowledge of English is a must in____international trade today.能写出答案吗？请说明理由～！
