Bill is not a fast runner and he doesn't have a chance of winning the marathon, but he will _____ the race even if he finishes last.
I really don’t know _________ I put my wallet after I paid the bill.
During the examination we are required to stay in our seats, keep our eyes on our work, ____ to anyone.
________ these experiments were successfully completed would we think of going into humans.
Currently, many American women are still faced with the ________ of choosing between work and family commitments.
Tony ________ full marks, but he was so careless as to make a spelling mistake.