A dark blue design will not on a blackboard.
Doctors and nurses tried their best to make the patient feel _________ .
He turned his back __________ me and refused to lend me any money when I lost my job .
__________ the course very difficult , she decided to move to a lower level .
—What is your favorite ______ of sports clothing? —Nike.
—______ How can we get to the Five-star Hotel? —Go straight ahead till you see the tall building at the end of the road. —Thanks very much.