This is the first time for me to hold the ________ birthday party for an old man.—I am not busy. Let me help you.

I’m a teenager’s mother. Sometimes I don’t know ____.—Maybe he suffers from stress.

Would you mind not playing soccer in the street —___________. We’ll go and play in the park.

The mainland _____fresh water and vegetables _____ people in Hong Kong every day. [ ]

He has ________ himself to be innocent.[ ]