．Mike didn’t notice Alice entering his room. He __________ a phone call.A．answer
题型：不详难度：来源：
．Mike didn’t notice Alice entering his room. He __________ a phone call.| A．answered | B．has answered | C．was answering | D．is answering |
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答案
| C |
解析
| 上文的语境已经提示。过去进行时表示过去一个动作发生，另一个动作正在进行，过去进行时往往提供一个背景。 |
举一反三
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