It is obvious that John is unhappy. , it es as no surprise that she has decided to change her job.
A. However
B. Otherwise
C. Moreover
D. Therefore
网友回答
A. However
B. Otherwise
C. Moreover
(答案→)D. Therefore
解析：连词辨析. A. 然而;可是 B.否则;另外 C. 而且;此外 D. 因此.根据题意,很明显,约翰不高兴.因此,她决定换工作也就不足为奇了.选D.