单选题 In the recent six months, the factories in this region have closed every weekend to____energy.

单选题 This edition ____ has been more popular among general readers and brought many sales.

单选题 They apparently hold back produce ____ prices will rise so that they can make a fortune.

单选题 ____ investors refers to those who are characterized as short-term-oriented investors.

单选题 Reading romantic stories can help people become ____ and more optimistic about their own life story.

单选题 The book describes a spiritual journey from ____ to happiness and teaches readers to keep strong and optimistic.

单选题 These stories remind us of the ancient past, ____ us better understand our life and foresee the coming problems.

单选题 Being ____ means being hopeful about the future and never giving up no matter what happens to you.

单选题 By sheer ____, we happened to be traveling on the same train and staying in the same business hotel.