There’s no doubt enough concern must be paid to the problem of the stayathome children.
A. which
B. whether
C. that
D. what
网友回答
A. which
B. whether
(答案→)C. that
D. what
解析:句意:这是没有疑问的, 关于留守儿童的问题必须给与足够的关注。固定句式There’s no doubt that…毫无疑问的是…… There’s doubt whether……怀疑是否……因此C正确。
考点: 考查固定句式的用法辨析。