第35题: [简答题]Many people nowadays have muscular problems in the neck,the shoulders and the back________________________(主要是由于工作中的压力和紧张造成的). 参考答案:mainly due to/because of stress and tension in their work 答案解析:本题考查原因状语。分析句子可以发现句子主干完整,故填入部分应该为非谓语,用due to或because of。