从句选择题

解题思路： 如下
解题过程：
选D 。本题考查定语从句的用法。句意为：“我有时间和我的孩子们度过一天的机会是很少的。” 此句为分隔式定语从句。 先行词occasion的意思是“时机/时刻”，在定语从句中充当时间状语，所以用关系副词when来引导此定语从句。
即：when I have the time to spend a day with my kids
= on which I have the time to spend a day with my kids
= on occasions I have the time to spend a day with my kids
= I have the time to spend a day with my kids on occasions.
最终答案：略