Do you know Jim quarreled with his mother? — I don’t know. _____.

Do you know the man who _________on the road just now?

May I speak to Mr Wang?—Sorry. He______ a speech now. Please call later.

My father ___________ a letter yesterday, but I’m not sure if he has finished it. —Why not ask him about it ?

He was crossing over to _____ side of the road when I saw him.