Tom has good knowledge of English and this will improve his chance of finding proper job

Tom has good knowledge of English and this will improve his chance of finding proper job.
A. a; the
B. a; a
C. /; a
D. /; the

A. a; the(答案→)B. a; aC. /; aD. /; the解析：考查冠词；第一空是固定词组have a knowledge of掌握…；第二空中的job是可数名词，用a修饰，泛指一份合适的工作。句意：Tom的英语很好，这将提高她找到一份合适的工作的可能性。根据句意说明Ｂ正确。

这个问题我还想问问老师呢