He made a great __________ to the success of the project.

Wang Mei devoted herself entirely to her career, which earned her a good ________in her field.

. —Li Hua was in London for two years.   —It’s no ___ he can speak English so well.

People are using more and more natural gas, wind and other forms of _____.

It is always true that sometimes even if you have had a big dinner, _________ are that you will still want to reach for food when it gets late．