Mr. Thompson, without timely help finishing the task would have been out of the question, fell ill last week.
A. his
B. whom
C. who
D. whose
网友回答
A. his
B. whom
C. who
(答案→)D. whose
解析：考查定语从句。本定语从句的先行词是Mr. Thompson,关系代词在句中放在help的前面做定语。在定语从句的关系词中，只有whose可以放在名词前面做定语。句意：要是没有了Mr Thompson的及时帮助，完成那个任务是不可能的，而Mr Thompson上个星期病了。故D正确。