There are ________days this year.
The documentary Under the Dome by Chai Jing tells us to do ______ to stop ______ our environment.
The little baby has a ______ eating nuts because he has no teeth.
Nowadays, people like to discuss if young couples need ______ second child.
—I don’t understand_________.—I’m sorry. But I was doing my homework at that time.
The park is far away from here indeed it’s about_______walk