What do you usually do Sundays— I usually visit museums with my friends.

Ronald Amundsen is considered to be one of the greatest ________ in history because he was the first man to reach the South Pole(南极).

At present an increasing number of parents wish to _________ changes in educating their children due to dissatisfaction with the educational system.

The toughest thing about success is ________ you have to keep on being asuccess

Sandy reads more books than __________ in her class.