You may not understand what they have done, because they ____ a younger generation.
Jane is a smart girl in theclass who is prettier than _______.
.Inthedarkstreet,therewasn’tasingleperson,_______shecouldturnforhelp.
The documentary Under the Dome (《苍穹之下》) which ________ by Chai Jing showed us that the air pollution in China was very serious.
We have got a ticket _____ 300 yuan ______ the sofesleeper.