问题
选择题
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
Ｃ
固定词组。Be concerned about…担心；结合句意可知C正确。句意：在过去的10年里，人们对于他们的隐私安全更加担心。
