Tom likes reading books when he _______

试题详情及答案解析

Tom likes reading books when he ________.

A．is free time	B．has free
C．have free time	D．is free

答案：D

试题分析：句意：当汤姆有空时，他喜欢看书。 is free="have" time有时间。结合句意，故选D
考点：考查动词的用法。