George is one of the brightest who_________ from New York University.

It is becoming increasingly difficult to grow enough food to ________ much of the earth＇s population from starvation.

.-I think you have too much luggage, don＇t you?-Yes. But it＇s not easy to decide what to ______ behind.

It doesn＇t alter the fact that he was the man _______ for the death of the little girl.

I suggest that he _______ it next week.

________ I remember, his writings always had the same meticulous descriptive quality.

I really don＇t know how to ______ the problem.

Investigations ______ the origin of life on the earth have shown that, given earth-like conditions, the formation of life is almost inevitable.

In the miserable days, his kind words gave me great ______.

In some families there is a _______ battle between the young and the old.

In Shenzhou VI, Chinese astronauts aren＇t only spaceship drivers, _______ machine repairers and scientists.