问题
选择题
I ____ to reach the manager for the last two hours but the line is always busy. [ ]
A. tired
B. have tired
C. had tired
D. have been trying
答案
答案：D
搜题请搜索小程序“爱下问搜题”
I ____ to reach the manager for the last two hours but the line is always busy. [ ]
A. tired
B. have tired
C. had tired
D. have been trying
答案：D