問題詳情：
---Do you know what Millie and Andy were doing at 8 o’clock yesterday?
---While Millie_____________ TV, Andy_____________ a book in the bedroom.
A. was watching; was reading B. watched; read
C. was watching; read D. watched; was reading
【回答】
A
知識點：動詞時態
題型：選擇題
