--The plane is due to take off at 7∶50 from the airport. --________ we fail to arrive there in time?
Tim ,don’t ______________ the fire or you will get burnt .
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.