Han Mei often draws pictures ________ the blackboard. [ ]

Mike, why did you make no reply to me when I called your name in the street just now?-Sorry, Tom. I_______ to my mother on the phone.

What is your mother doing?—She ___ for oranges.

The man didn’t know _________ the thief broke into the house and stole all his valuable things

Last Sunday was my birthday. My mother bought _______ iPhone4 as _______ birthday present for me.