Mr. Manson, who holds the office of chairman, has ________ heavy a work load that it is difficult for him to travel.
句意：作为董事长，曼森先生工作繁重，以至于很难去旅游。考查结果状语从句。修饰形容词heavy，形成so…that的结构，表 示结果状语。在so后是形容词、副词或分词，而在such后则是名词。