China ______ a lot of people moving to urban areas in the last 20 years. However
题型：不详难度：来源：
China ______ a lot of people moving to urban areas in the last 20 years. However, many migrants left their families behind.| A．saw | B．sees | C．has seen | D．had seen |
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答案
| C |
解析
试题分析：考查时态：句意：在过去的20年中中国见证了很多人搬到都市，然而，很多移民把家人留下了。时间状语是in the last 20 years表示从过去到现在一直在做的事情，用现在完成时，选C。 |
举一反三
Only a small percentage of the graduates ___________________ a job. | A．have been offered | B．have offered | C．has been offered | D．has offered |
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The English teacher told us this morning that we _____ an exam at the end of this month. | A．will have | B．would have | C．have had | D．had had |
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It was the second time that we ______ in holding such important parties.| A．had succeeded | B．succeed | | C．succeeded | D．have succeeded |
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Tell me when you ______ at the airport, Alice. I’ll go there to meet you if I’m free.| A．arrive | B．would arrive | | C．have arrived | D．are arriving |
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Although the Eiffel Tower ______ to last for 20 years, it is still standing today.| A．has designed | B．had designed | C．is designed | D．was designed |
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