She thought I was praising her child in fact I was scolding him for his bad behaviors　at

问题补充：

She thought I was praising her child，，in fact，I was scolding him for his bad behaviorsat school.

A. what

B. while

C. so that

D. therefore

答案：

A. what

(答案→)B. while

C. so that

D. therefore

解析：句意，她认为我在表扬她的孩子，然而，事实上，我在批评他在学校的不好的行为。What什么 while 然而 so that结果 therefore因此，根据题意，故选B。