Question

【题目】On Sundays there were a lot of children playing in the park, ______ parents seated together joking.

A．their B．whose C．which D．that

Answer 1

【答案】A

【解析】此题容易误选B，认为这是非限制性定语从句。其实，句中的their parents seated together joking不是非限制性定语从句，而是一个独立主格结构，因为空格后的动词seated不是谓语，而是一个过去分词，seat作动词用时，是及物动词。