While the thief was searching in the room, the door_____.

ung tribal man helped Mrs. Davidsonfind her way back, in return for________medical equipment was offered to him bythe latter.

The money collected should be made good use ____________the people in South Asia who suffered a lot in the earthquake and the tsunami .

Only by practicing a lot _____ our English well enoughto communicate with foreigners.

_____ pleasant life we are having in thenew century!