As the world’s population continues to grow,the ________ of food becomes more and more of a concern. (2013·浙江,4)
If we don’t hurry up, we won’t be ______ to catch the train.
The US President Obama told the students that he ______ by a single mother who were strict with him and wished him great success in his studies.
--- Would you mind my coming over and having a look at your new garden? My little son’s curious about those roses you grow.--- ______. You’re welcome.
______, the car stopped all at once.
– I don’t suppose the police know who did it. -- Well, ______ they do. A middle-aged man has been caught and ______ now.