Mr. Green didn’t post the letter _________. He asked his son to do it for him.

You look so fired, Betty. –I _ _ slept at all and feel pretty awful.

Hi, Linda. I didn’t see you at the party last night.— Oh, I ready for the math exam all the time.

Mum, have you seen my mobile phone? —_______you bought last week? I’m sorry I haven’t seen _______.

I don’t know ______ watch this is. Do you know? ——It might be Gao Lei’s.