Working hard is not only a _____ of great success, but it is among the essential requirement.

Shelly had prepared carefully for her English examination so that she could be sure of passing it on her first ________. 

I refuse to lie about it, because it’s against my _____.

Children nowadays are bought up on a _______ of television cartoons and soup operas. 

 The CASS said the scores were based on corporate responsibility and financial reports,. But some people raised__________ about whether the information was reliable.