My mother has not yet recovered from the illness, but she is __________ getting better.

New reports say peace talks between the two countries have broken ____with no agreement ________. 

The clerks were at work so ____ that nobody realized it was already lunch time.

The newly­learnt words will be impressed on us only if they are ________used in everyday communication.

As is often pointed out, knowledge is a two-edged weapon which can be used ________ for good or evil．