【推荐1】Some people believe____has happened before or is happening now will repeat itself in the future. (用适当的单词填空)

【推荐2】In order to build a full-sized model for the film Titanic, Director James Cameron even went down to the bottom of the Atlantic Ocean to see ________was left of the ship for himself. （用适当的词填空）

【推荐3】Some children want to challenge themselves by learning a language different from ____________ their parents speak at home. (用适当的词填空)