问题补充:
It was because he was ill we decided to return home.
A. why
B. that
C. when
D. where
答案:
A. why
(答案→)B. that
C. when
D. where
解析:考查强调句:结构是:it is /was+被强调部分+that/who+…,其最大的特点是把it is/was…that/who…去掉,句子仍然成立。强调的是原因状语:because he was ill,句意:是因为他生病了,我们才决定回家的。选B。