This is the most beautiful village _______ I visited these years.
D
分析句子成分后发现，visit为及物动词，所缺部分为宾语，所以应该选择关系代词。因为这里涉及到了最高级，所以只能选that。
Theoutlineofrooftopsandchimneys________againstthepalesky.
Ayearlater，withthenation’seconomy________，Bush’sapprovalratingdroppedbelow40percent
Thefarmingmethodshavebeen________improvedwiththeinventionofthenewmachine.
The vehicle was traveling at speeds ________ 90 miles per hour.