Yesterday was my friend Bruce’s birthday. He invited me ______ his birthday party.[ ]

______milk do you need to buy?－Two cartons.

Is Ann knocking at the door?— No, it ______ be Ann. She has gone to Beijing.

What do you want to be when you graduate from middle school?— I want to be _________university student. I’m in great ______ need of knowledge.

The guidethe students around Zhang Jian’s Former Residence（张骞故居）last month.