从A、B、C、D四个选项中，选出可以填人空白处的最佳选项，并在答题卡上将该项涂黑
21. I like to live in a room ________ window faces to the south.
A. which B. whose C. that D. where
22. ---Can we meet at 3 o’clock tomorrow afternoon?
--- That doesn’t suit me. I’m afraid I _____________.
A. will be working B. will work
C. am going to work D. am about to work
