大家快点造下句 我还会提高悬赏的 这是作业啊 求求你们了
buy~have
I have had this cellphone for seven days .
come ~be
He has been here for several months .
begin ~be on
The class has been on for a quarter .
end ~be over
It is late for you to catch the film because it has been over for several minuter.