注意：此页面搜索的是所有试题
题目内容
（国家开放大学-商务英语）
What.s more, it.s not always so ______ for us to pay online as hackers might steal our user name and password.
选择一项：
A.
safety
B.
safe
C.
safely
选择一项：
A.
safety
B.
safe
C.
safely
参考答案
