My uncle willbe back( ).选择a.after half a month b.three days ago c.for three days d.in three days
问题描述：
My uncle willbe back( ).选择a.after half a month b.three days ago c.for three days d.in three days
答
D in
in three days（表将来时） 三天以后 in 加时间 表将来 will be将来是标志