Every possible means ________ to prevent the air pollution, but the sky is still not clear.
A. is used B. are used C. has been used D. have been used
He felt ______ as soon as he realized that he had asked a foolish question.
A. bored B. displeased C. embarrassed D. disappointed
All the neighbors admire this family _______ the parents are treating their child like a friend.
A. why B. where C. which D.that
Lucy had an unusual ______ for learning languages when she was a baby.
A. quality B. gift C. purpose D. sense
Among the brilliant athievements, a few records _______ because of the moving life stories behind them.
A. let out B. stand out C. leave out D. pull out
There are five chairs ___ ,but I am at a loss which to buy .
A. to be chosen B. to choose from C. to choose D. to be chosen from
