In the last few years, great changes _________to her, she is not the one that used to be.

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.

______ have you stayed in this school ? —For three years.

You can ________ in a parking lot.

You must ______ your cigarette when you are at the gas station.