问题补充:
We can see no clouds in the sky. Therefore, there’s no doubt it will be fine tomorrow.
A. that
B. whether
C. if
D. how
答案:
(答案→)A. that
B. whether
C. if
D. how
解析:考查固定句式。固定句式;There is no doubt that…毫无疑问…that引导的是一个同位语从句,来解释名词doubt的内容;句意:毫无疑问明天的天气会很好。故A正确。