--I want to write __________ article about the great inventors in the world. Can you help me? --Sorry, I don’t know much about __________ topic.
It’s important _______ you to learn Chinese well.
The girl is ____ a nice girl ____ we all want to help her.
Her sister ____ a taxi driver. Now she works for a charity.
They _____ England and they will be back next week.
She _______ this book for nearly three weeks.