You should praise your son. he works harder than before.A. After allB. Above allC. As a

问题补充：

You should praise your son. , he works harder than before.

A. After all

B. Above all

C. As a result

D. First of all

答案：

(答案→)A. After all

B. Above all

C. As a result

D. First of all

解析：考查短语辨析。句意“你应该表扬你的儿子。毕竟，他比以前学习努力了。”A“毕竟”；B“最重要的是”；C“结果”；D“首先，第一”。故选A。