题目内容
Every means _________, but none proved __________.
A. have tried; a success
B. have been tried; successful
C. has tried; to be successful
D. has been tried; successful
练习册系列答案
相关题目
题目内容
Every means _________, but none proved __________.
A. have tried; a success
B. have been tried; successful
C. has tried; to be successful
D. has been tried; successful