It was ______ of you not to give others a ride in your new car.

—Do you like to go to a movie or walk in the country this Sunday?—I’d like the          choice. I need some fresh air.

Einstein’s Theory of Relativity is so________ that most of us can not understand it.

 In order to solve the problem as soon as possible, they had a __________ discussion.

According to the statistics，young drivers are more ________to have accidents than older drivers.