The Great Green Wall can stop the wind sand to the rich land in the south of China.
Mary used to________ to work, but now she gets used to__________ to work.
Gone with the wind is a well-known novel. She ____________ it twice.
He lives in a small house __ _______, but he doesn’t feel__________.
The child has to come to school by bike ________ his own.
I don’t like physics ______ it’s too difficult for me.