Not until he left his home ________ to know how important the family was for him.[ ]

It’s such a good place___ everyone wants to go andvisit ___ it is well-known all over the world.

Plastics and other similar rubbish that does not ______ may not be thrown into the sea anywhere.

Being a Chinese, I feel proud of my country and the contributions _________have been made to the world culture.

The rate of racial progress varies in different areas of the country, but in the past ten years _________ more improvement