问题补充:
I’ve already forgottenyou bought the dictionary.
A. that it was when
B. that was it when
C. when was it that
D. when it was that
答案:
A. that it was when
B. that was it when
C. when was it that
(答案→)D. when it was that
解析:选D。考查强调句型和名词性从句。此处为强调句型的特殊疑问句形式“特殊疑问词+is/was it +that +句子的其他成分”, 作宾语时使用正常语序, 所以选D。