He sat down on the sofa,__ on the televisionnand watched a new play 填Aturn Bturned Cturning
问题描述：
He sat down on the sofa,__ on the televisionnand watched a new play 填Aturn Bturned Cturning
答
C
turning 做 sat down on the sofa 的伴随情态状语
表示他坐在沙发上时 伴随着打开了电视