in the last two years/during the last two years/in the past two years/during the past two years有什么区别?

I have visited thirty cities in China____.A.in the last two years B.since last year I had visited thirty cities in China____.A.in the last two years B.since last year Last year,I____(stay)with my grandparents in the countryside for two weeks. I __________ (be) in Class Two last year. i___(be)in grade two last year.怎么填, 英语翻译Wardak and Logar had been relatively secure until late last year.But by most accounts,Taliban activity has soared in the two provinces in the past year The boys enjoyed______ in Beijing last year. Tina went to the zoo ___(two)last year The girls found two pens last year.改成否定句 英语中前年怎么表示?Two year ago?The year before last year? in last year,last year和in the last year它们有什么区别?都有这些形式吗? paper produced in the factory this year is three times the weight of that of the last two years,so the factory can't have made better progress the summer before last year 对还是in the summer before last year this is the last year i stay inThis is the last year i stay in sichuan. 1.The two in the same class last year. A. are B. was C. wer1.The two boy in the same class last year. 2.---Where you ? ----I went to buy some food for supper. 3.The students in Li Lei’s class on a farm last week. 4. that The twins are in their ___(two) year in china. the summer before last year the前加in 改病句the water in the river polluted last year