I want ______ some bird-watching this weekend.

In my class, 85% of the students like to go shopping on weekends. 85% means.

I think my friend Tony is _______to win the tennis game next Monday.

Can you explain ____ most deserts are located near the west coast of the continents?

Hundreds of students came to Shaoxing to work _______ the World Choir Games in 2010, [ ]