Hard work is no     of an excellent school record．You have to adopt a flexible approach to your learning．

Our English teacher，Billy，never criticizes us，but uses        to make us work hard.

In 21st century universities in the US, there is little room for traditional literature because students feel a lot of         to study science.

The salmon dish was _______, wasn’t it?

— Don’ t be so naughty! Be your _____．— Got it．