He left his hometown with the ______ of finding a good job in Shanghai.

Rescuers are ______ for the safety of the two men trapped in the mine.

You should write a _____________ composition every other week.

(2013·江苏质量调研)It brought child poverty to the________of the public，and for this reason alone it is a very impotant novel.

(2013·重庆一中模拟)—Who ________ be phoning us at this time of night?—It might be your sister.