23. Mr. Smiths was busy writing a story, only ______ once in a while to smoke a cigarette.
There was good food __________ abundance at the party.
It is very common that former soldiers have difficulty in ___________ civilian life.
After three years’ study, Jane got a ________ for teaching English.
He was generally _________ to be the finest poet in the land.
A clean environment can help the city bid for the Olympics, ________ in turn will promote its economic development.