---John has got a very good job in the government.
--- he looks so happy.
A. No doubt
B. No wonder
C. That’s because
D. It’s natural
网友回答
A. No doubt
(答案→)B. No wonder
C. That’s because
D. It’s natural
解析：考查交际用语。(It is) no wonder难怪……。句意：——约翰在政府有份好的工作。——难怪他看起来这么高兴。