题目内容
—What were you doing at this time yesterday?
—I ______ on the grass and playing with Tony.
| A．sit | B．sat | C．am sitting | D．was sitting |
D
解析试题分析：句意：昨天的这个时间你在做什么?我在草地上坐着和Tony一起玩.过去进行时表示过去某某一时刻或过去一段时间内正在进行的动作.常用的时间状语then,at that time,this time yesterday,at ten yerterday等, 根据语境和题意故选D.
考点：考查过去进行时。
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