He is the most hard-working students in his class. That means he is more hard-working than_______ in his class.

We are confident that the step the Chinese government has taken to cope with the current crisis is ______ of great significance.

James is a famous clothing designer (设计者) whose style is similar to ______ of Joan Keats’s. 

He didn’t make ________ clear when and where the meeting would be held. . 

Let’s paint one side of the paper red, and _____ side black.