题目内容：

is this museum ___ they visited last month?A.that B.which C.where D.the one 选哪个?

优质解答

答案选D.the one
定语语从句缺少先行词,用the one代指this museum,并省略了关系代词that或which,因为that或which在定语从句中充当宾语成分,可省略.因此答案为D.