My schedule is quite ______ I could arrange to meet with you any day next week.

（2014重庆一中高三下第三次月考）12. —I hear your brother likes computer games, music, beer and fine food.  —Oh, yeah, and music may have been ____ of his tastes. 

It is a fact that _________ differences between countries may cause misunderstandings in communication.

This bird is really lovely， and I’ve never seen ______ one.

Gaining the knowledge ________ environmental protection will help you to become a qualified environmentalist.