Many people nowadays have muscular problems in the neck, the shoulders and the b

游客2024-06-08 54

问题 Many people nowadays have muscular problems in the neck, the shoulders and the back

选项

答案 mainly due to/because of stress and tension in their work

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。

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