单项选择题
A.We might have the leaflets before 11 July. B.We won't have the leaflets before 11 July. C.We are sure to have the leaflets before 11 July.
A.We have done the research in the north and the Midlands. B.We haven't done the research in the north and the Midlands yet. C.We have decided not to do research in the north and the Midlands.