To her joy, Della earned first the trust of her students and then ________ of her colleagues.
By the time she_____体操比赛上 at the New York Good Will Games, she_________ a dedicated junior gymnast for eleven years.
As Polly was riding on the train, she sensed that she was _____ by a tall man in a dark coat.
Over the long process of evolution, animals have developed their ______ senses, which makes it possible for them to _____ their environments.
His ability is beyond question; _____ has been in doubt is ____ he is prepared to work hard
Half of the students will have sports, and the rest _____ to be here in the classroom studying.