对比两道英语选择题3.___back on that performance,she realized that she
对比两道英语选择题
3.___back on that performance,she realized that she had never felt so alive.
A.Looking C.Having looked
4.___the programme,they have to stay there for another two weeks.
A.Not completing C.Not having completed
这两道题我都选择错误.而且3题我选择的是C,4题我选择的是A. 我错在哪儿?