If you want to study the nature of the universe, first of all, you must be clear about its ________.

After two hours of hard fighting,the northern army won the ________.

He was nominated（ 提名……为侯选人）for the best actor____.

Great ________ should be made to speed up higher education to meet the needs of industry and agriculture.

Mr.Blake is very popular because of his good __________ of humor.