题目内容
While I ______ with Lily, the school bus came.
| A．talk | B．talked | C．was talking | D．am talking |
C
解析试题分析：句意：当我和Lily正在说话时，校车来了。表示过去正在做某事，用过去进行时。
考点：考查过去进行时。
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