We don’t doubt he’ll give us much helpwe doubt is he’ll come on timeA. whether That

问题补充：

We don’t doubt he’ll give us much help. we doubt is he’ll come on time

A. whether, That, when

B. that, What, whether

C. whether, What, whether

D. that, Why, whether

答案：

A. whether, That, when

(答案→)B. that, What, whether

C. whether, What, whether

D. that, Why, whether

解析：考查名词性从句。第一空是宾语从句，doubt用于否定句中使用that，第二空是主语从句，we doubt 后缺少宾语，所以用关系词What，第三个空是表语从句，是否按时来，所以用whether，古选B。