Have you heard that the research he spent most of his ti Wap版

试题详情及答案解析

Have you heard that the research he spent most of his time_______ perfect success?

A．on was a	B．to be
C．being a	D．on being

答案：A

试题分析：根据spend+时间+on sth表示在某事上花费时间；根据语境可知用一般过去式；根据句意; 你有没有听说他把大部分时间花费在研究上是一个完美的成功。根据句意故选A
考点：考查介词及时态的用法