最后请教几道高中英语语法题,说明理由?
问题描述：
最后请教几道高中英语语法题,说明理由?
5,__A______used to be my wish to get further education in______Great Britain.
A,It,\B,There,the C,It,theD,There,\
6,__D__in history when remarkable progress was made in raletively short periods of time.
A,There has timeB,It has time C,It is timeD,There has been time
答
it 做形式主语,代替后边的不定式
there be 句型的完成时,曾经有过这样的时候