We have been here for_____.A two and a half months B two and half a month C two and a half month选哪个?为什么?为什么其他不行?

Do not be afraid,we have been here accompany you! We have been working here for five years.We have been worked here for five years.有什么区别 We have been living here for 12 years.(改同义句）We have been here ____ 12 years ____. We ____ here two hours ago.We ____ here for two hours.A.have arrived;have beenB.have come;have beenC.came;have come D.arrived;have been We have been studying english since we move here有一处错了 We have been here for more than year同义句Over a year has ___ since we ___ here We have been here for just a week. 同义句It is just a week （ ）we （ ）here. 改错:Someone have been here 改为同义句 We have been here for just a week.It is just a week ( ) we ( ) here.We ( ) here just a week ( ). We have been ```` We have been for just a week.同义句转换We_____ here just a week ____` “We have been here for 2 years.”的特殊疑问句是什么? We have been here since 2011对划线部分提问.划线部分是since 2011 You have been here,的have came China since to we have used life here we been the to 怎样连词成句 We got here this morning.We have‘t been ____ yetA.anywhere elseB.somewhere elseC else anywhereD else somewhere “We would have been here at lunch time; we were delayed at the airport,though.”怎么翻译? 将We have been here for just a week.改为同义句.We ( )here just a week ( ).空格里填单词!