Ever since my grandparents moved to the countryside a year ago ,they _______better health.A.are enjoying B.have been enjoyingC.had been enjoying Dhad enjoyed
问题描述：
Ever since my grandparents moved to the countryside a year ago ,they _______better health.
A.are enjoying B.have been enjoying
C.had been enjoying Dhad enjoyed
答
选b，句意为：自从我爷爷奶奶一年前搬到乡下住的时候，他们一直保持健康。evere since是自从，时间为一年前，持续到现在，根据句意，应该是现在完成进行时！其他三项套进句子均不合适！
答
B.have been enjoying
现在完成进行时
用法：动作从过去开始，一直持续到现在，而且还有可能再继续下去。
答
B
这句话是说,自从我祖父母一年前搬去乡下,他们的身体就变好了.
有ever since提示,并且前半句用的是过去式,所以后面应该是用现在完成进行时,表示身体好了的情况一直持续到现在.