No matter how difficult things seem to be you should say to “Never mind!” A positive at

问题补充：

No matter how difficult things seem to be, you should say to , “Never mind!” A positive attitude is the key to success.

A. themselves B. ourselves C. yourselves

答案：

解析：themselves他们自己；ourselves我们自己；yourselves你们自己。句意：无论事情似乎有多么困难，你们都应该对自己说，“不用放在心上”！积极的心态是成功的钥匙。结合语境可知选C。