These problems may lead to more serious ones, if unsolved.
A. remained B. keeping C. left D. making
His efforts to raise money for his program were ____ because no one showed any intention to take a cent out of their pockets.
A. in place B. in sight C. in effect D. in vain.
Today, people are paying more and more attention to their health, books on keeping healthy extremely hot.
A. to make B. making C. make D. made
Green tea, many experts suggest, should be drunk regularly to improve health.
A. which B. where C. when D. as
—How was the journey?
—Tiring! I caught the train at the last second but all the seats . I stood all the way.
A. had been occupied B. had occupied C. would occupy D. would be occupied
Mobile phone users have developed a series of symbols, such as ^_^ and └(^o^)┘， to show they feel.
A. which B. why C. how D. what
