Question

【题目】George was heard ________ just now. What happened?

A.to laughB.laughC.laughed

Answer 1

【答案】A

【解析】

句意：刚才有人听见乔治在大笑。发生什么了？

考查动词不定式用法。make sb do是某人做某事，其被动形式是be made to do, to laugh动词不定式，可以在表示被动语态的句中做主语补足语；laugh是动词原形；laughed是动词过去式。本句是被动语态，动词不定式做主语补足语，故选A。