Ever since we moved to South Florida two years ago, we______fresh clean air.
A．had been enjoying
B．have been enjoying
C．are enjoying
D．enjoyed

A.
A．had
B.have
C.are
D.enjoyed


【参考答案】

B
这是一道语法题，考点是动词完成进行时的用法。Eversince后面表示“自那以后一直…”，因此要用完成进行时。