________ two months enough for the project tobe finished—I am afraid not. The professor is ill and only afterhe recovers ______ go on with it.

k it unwise to live ______ one’s income,as is the case with a lot of young people today, who often turn to theirparents for help

It was stupid __ him __ this mistake .

___ to 100℃, water will boil

My mum often________ me do my lessons after school．