A driver should ________ the road when _________.A．concentrate on; driveB．concen
题型：不详难度：来源：
A driver should ________ the road when _________.| A．concentrate on; drive | B．concentrate in; driving | | C．concentrate to; drove | D．concentrate on; driving |
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答案
| D |
解析
| 考查短语及非谓语动词。concentrate on集中，句中逻辑主语driver，与drive之间为主动关系，故用现在分词，选D。 |
举一反三
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