Water can absorb and give off a lot of heat without big changes in temperature , thus creating a        environment .

If you follow a diet expert’s advice, eating more can mean losing _____weight rather than less.

There must be ________ with the computer. 

______ with so many challenges, Yang Guang, a blind young fellow, didn’t give up; he made great efforts to win success.

Teaching as a career is          to many people owing to the long holidays.