Ever since the patients moved to the new hospital last year they better medical treatment

问题补充：

Ever since the patients moved to the new hospital last year, they better medical treatment.

A. have received

B. had received

C. will receive

D. received

答案：

(答案→)A. have received

B. had received

C. will receive

D. received

解析：句意：自从这些病人去年搬到新医院，他们已经受到了更好的医护治疗。和ever since…连用，用现在完成时表示动作从过去到现在一直在做，所以选A。