Last week our maths teacher set so difficult an examination problem___ none of us worked out.A.thatB.whichC.as D.so that.Please explain.

Last week our maths teacher set so difficult an examination problem___ none of us worked out.A.thatB.whichC.as D.so that.Please explain. A few American______visit our school last week last week,in last week有什麽区别?原题是这样的：we returned to our hometown last week (2/2)ting _ our school last week. last week we visited our aunt.谁知道啊 11111 we,last,our,visvitde,aunt,week连词成句 Last week a group of ____ visited our school (canada) Do you know the results __ our exam last week? several _____(foreigner) came to vidit our school last week. 问一个英语改错题Mr.Wang taught our maths last year. last week last.week 把we moved to our new flat last week..用next week改写句子 there are fifteen acts in our school talent show last week(用next week改写) 英语翻译把以下句子翻译中中文.（有些多嘤.）1.Jim isn't good ai maths or science,but can speak English very well.2.Our history test was so long last week that no one could finish it.3.It was the last day of school ,but the teacher s last week,a UNICEF woker came to our village.对划线部分提问划线部分是last week We visited our friends last week.（对划线部分提问） 划线部分是：our frienfds our maths teacher has _ Australia for a week A.been to B been in 为什么选这个