答案C分析：decide后面跟动词不定式作宾语。(延伸)decide 跟 that从句，如：He decided that he would learn another foreign language．跟wh从句，如：I can't decide which I should choose．(＝I can't decide which to choose．)(题型变化)decide to do sth＝decide on doing sth＝be determined to do sth＝make up one's mind to do sth＝make a decision to do sth...
