Lin Hai and Dave __ his good friends.

What is a writing brush, do you know? — It’s used ______ writing and drawing. [ ]

Why does take Tom an hour to get home?— I don’t know. Maybe the traffic is heavy.

His bike is broken. He askedif I would like to share with him.

When I came here just now, I saw he _______with a black and white dog in the garden.