You ______ the examination again since you had already passed it.a. needn’t have taken b. didn’t need to take c. needn’t take d. mustn’t take
After hours of repair,the driver tried to start the car but it _______ work.
—Daddy, would you buy me an MP3 player if I do well in the first city-wide examination? —I _______, I promise.
I _______ have been more than six years old when the accident happened.
—Why does Sara know so much about Angkor Wat? —She _______ there,or she may have read about it.
—Excuse me.Is this the right way to the Summer Palace? —Sorry, I am not sure.But it _______ be.