从每题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
21. ----You forgot your purse when you went out.
------Good heavens, _________
A. so did I B. so I did C. I did so D. I so did.
22. I can’t remember _______ you started doing the work.
A. that it was when B. when it was that
C. when was it that D. that was it when
