I know the money is safe I shall not worry about it. A. Even though B. Unless C. As long

问题补充：

I know the money is safe, I shall not worry about it.

A. Even though

B. Unless

C. As long as

D. While

答案：

A. Even though

B. Unless

(答案→)C. As long as

D. While

解析：句意：如果我知道这笔钱安全的话，我就不会为它担忧。