Professor Liu has ________ teach psychology since he came to the Central China N
题型：不详难度：来源：
Professor Liu has ________ teach psychology since he came to the Central China Normal University.| A．determination to | B．been determined to | C．been determining to | D．determined to |
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答案
| B |
解析
| Since引导的时间状语从句强调主句谓语动词动作的持续性。 |
举一反三
—Why? Where is the key to the meeting room?
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| The latest data put forward by the states suggested that the business ___ improving. |
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