There is no doubt they did a pletely bad job at that very moment.
A. which
B. whether
C. how
D. that
网友回答
A. which
B. whether
C. how
(答案→)D. that
解析：句意：毫无疑问在那个非常时刻他们做的是完全坏的工作。这里用There is no doubt that….句型，that连接的是同位语从句，说明doubt的内容，如果这句话是肯定句：There is doubt …后面应该是whether连接同位语从句，所以选D。