Our class adviser doesn’t doubt in any case..we can overcome the difficulties in our study

问题补充：

Our class adviser doesn’t doubt，in any case..we can overcome the difficulties in our study.Healways gives us a confident smile.

A. how

B. whether

C. that

D. why

答案：

A. how

B. whether

(答案→)C. that

D. why

解析：C【点拨】not doubt后面的宾语从句需用that引导.以表达确定的枣情。决定成为，决定去做……；A项不满足的；B项吃惊的；D项泄气的。