This is the first time I have visited the Great Wall.的同义句
I 've never been to the Great Wall before.第一个空格好像不能来个一撇ve吧。。。。。你给的空格只有三个，限制得较紧，为了表达同义句，我只能写成've，只有这样才能完成这个任务，你说是吗？I 've never been to the Great Wall before.好吧我们老师不肯用一撇ve，只好应付下，估计出卷子的2货弄错了，只能这样安慰自己。。。。