分类：教育/科学-学习帮助
问题：单项选择1.tolookatthosechildren_____ 
1. to look at the children ________ me happy.a. make b. makes c. making d. to make
回答：To look at those children ________ me happy.
b. makes 
不定式作主语看作单数，所以谓语动词要用第三人称单数形式。该句的意思是“看这些孩子们使我很高兴”。再比如：To swim is good for our health.