Mary devoted as much time as she could ________

试题详情及答案解析

Mary devoted as much time as she could _________for the elderly.

A．care

B．caring

C．to care

D．to caring

答案：D

试题分析：句意：玛丽投入尽可能多的时间来照顾老人。devote time to doing sth“投入时间做某事”，故此处用to+caring,故选D。
考点：考查动名词的用法。