问题
选择题
Whether ways can be found to stop pollution or not is just _____ worries the public. [ ]
A. why
B. which
C. that
D. what
答案
答案：D
搜题请搜索小程序“爱下问搜题”
Whether ways can be found to stop pollution or not is just _____ worries the public. [ ]
A. why
B. which
C. that
D. what
答案：D