【摘要】【2011北京】1. —What were you doing this time yesterday? —I ____ on the grass and drawing a picture. A. sit B. sat C. am sitting D. was sitting 【2011.广西北海】2. While I ___________ TV, the bell rang. A. watch B. watched C. am watching D. was watching 【2011.山东淄博】3. —Why didn’t you answer my telephone yesterday? —Sorry. I _______ a bath. A. took B. take C