He was busy writing a story,only _________ once in a while to smoke a cigarette.
______ the new policy, we are now living in a grand, new apartment.
Many people think that it is ______ making such an experiment.
It was foolish of him to ________ his notes while taking such an easy test, and as a result, he got punished.
Don’t handle the vase as if it ____ made of steel.
—How about your journey to Mount Emei? —Everything was wonderful except that our car________twice on the way.