I think that frequent short vacations are much more ______ than

I think that frequent short vacations are much more ______ than a long annual holiday.（desire）
【正确答案】：desirable
【题目解析】：根据句子中的are much more可知此空要填的是形容词，desire是名词或动词，其形容词形式为desirable值得拥有的。