---Mom , ________ I go shopping with you ?---Yes , you ________.But you have to finish your homework first .
Is that your best friend Kitty? — No, it _________ be her. She flew to Singapore yesterday.
---Excuse me, Sir .But smoking is not allowed here. -----Sorry,I didn’t see the sign.I’ll __________ my cigarette at once.
—Would you mind my sitting here, Sir? —_________. It’s for my wife.
I_______ my homework when the door bell__________.
What are you busy doing, Sandy? —— I’m making some flash cards _________ me remember English words.