Usually a child's behavior is a ________ of his family environment. 

The natural _______ of the mountains is beautiful.

Will you please also state your earliest delivery date, your terms of payment, and discounts for regular _______?

The boy slipped out of the room and headed for the swimming pool without his parents' _____.

After our government launched a (n)       to popularize Chinese language worldwide, lots of Confucius colleges have appeared in foreign universities.