Mr Black decided to give up his farm and devote all his time to______ those children living on the streets.

 He would be sure ________ disasters if I didn't stay to keep an eye on him.

Barack Obama told millions ______ him that his grandmother's influence on ______ he is and the way he views the world was significant. 

. Explosion happened in Wisconsin early Monday，_______ two visitors．

People cannot but feel _____, for they simply cannot understand how he could have made such a stupid mistake.