问题
选择题
His health failing, ______ last year.
A．so the school gave Mr. Smith leave
B．the school had given Mr. Smith leave
C．so Mr. Smith went on leave from work
D．Mr. Smith went on leave from work
答案
答案：D
题目分析：考查非谓语动词。题干中非谓语动词作状语，逻辑主语是其前的物主代词 his，也是句子的主语，故由 his 可知句子的主语指人，选 D。
点评：本题较难，那道题首先分析句子成分，确定所填的是完整的简单句子，不能加连词，再找正确的逻辑主语，确定是Mr Smith就可以定下答案。