Next to biology, I like physics _______.

In business negotiation, an _______ attitude may result in breaking the relationship with our partner while a too frank communication may bring a company into an unfavorable situation. 

Look at the picture. The painter, I think, is the most ______ artist in the country.

 The Chinese Education Department suggests teachers should receive ______ education to catch up with the development.

I knocked at the door hard,and soon the door opened and a _____ face looked out, “ who is troubling me at this time of night.”