Question

Is this research center ___you visited the modern

Is this research center ___you visited the modern equipment last year ?A where B that C the one that D the one that 答案是A和D老师说两个都行，能解释一下为什么不？

Answer 1

句子要换成陈述句：This research center is _______you visited ...这样看is后面差表语 即一个名词 所以选项里有the one 而后面的定语从句主语是you 谓语visited 那么差的是宾语 这个情况下 宾语可省略 但是这里的the one 先行词必须要出现