问题补充:
In the past 10 years people have become more the safety of their privacy.
A. worrying about
B. cared about
C. concerned about
D. paid attention to
答案:
A. worrying about
B. cared about
C. concerned about
D. paid attention to
解析:固定词组。Be concerned about…担心;结合句意可知C正确。句意:在过去的里,人们对于他们的隐私安全更加担心。