单选题
Ever since the Smiths moved to the suburbs a year ago, they ______ better health.
A、
could have enjoyed
B、
had enjoyed
C、
have been enjoying
D、
are enjoying
【正确答案】
C
【答案解析】
[解析] 分析句子结构可知,此处应用现在完成进行时态,表示从过去某时开始的动作到现在仍然在继续。故选C。
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