问题补充:
I admit that there are problems, I don think that they cannot be solved.
A. Unless
B. Until
C. As
D. While
答案:
A. Unless
B. Until
C. As
(答案→)D. While
解析:可联系答.案.网客服索取。
如果觉得《I admit that there are problems I don't' think that they cannot be solved.A. UnlessB. Un》对你有帮助,请点赞、收藏,并留下你的观点哦!