In the mind of many foreign travelers, the Alps still ___ idylli

In the mind of many foreign travelers, the Alps still ___ idyllic.
A、was
B、be
C、is
D、are
【正确答案】：D
【题目解析】：此句的主语是the Alps指阿尔卑斯山脉，该专有名词是复数形式因此谓语动词用复数，此句是陈述状态，要用现在时。