--Excuse me. I want to buy some stamps. Where can I find a post office?-- I know not far from here. You can easily find .
Mary and I _________ friends.
There _______ a pen and some pencils on the desk.
.--- Is your sister a factory worker or a doctor? --- ________________.
--------- Where are my pens? --------- _________________.
—Is Lingling’s father from England? —. He is Chinese.