When the teacher came in, all of us _______.
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
The world’s population is growing and there is land and water for growing rice.