It is believed children should learn to be responsible from the very beginningA. whyB. h

问题补充：

It is believed children should learn to be responsible from the very beginning．

A. why

B. how

C. when

D. that

答案：

A. why

B. how

C. when

(答案→)D. that

解析：句意：据相信从一开始孩子们就应该学会负责任。这里使用了固定句型:It is believed that…据相信…，it这里是形式主语，真正的主语是that引导的主语从句，所以选D。