--What do you think of the furniture on exhibition?

A
不可选the one , 因为furniture 不可数
it 是同名同物,不可做先行词； D 选项缺先行词
you bought 定语从句
意即： 可我并不看好你所买的家具
其实,这里用that 也不太好, 因为 that 一般也不接定语从句, 我觉得, 这里最好说：
But I don't think much of __what_ you bought
请及时采纳,不懂继续问
(*^__^*) 祝学习进步! 谢谢!