英语问题When the teacher ____the classroom,all the students stoo

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英语问题
When the teacher ____the classroom,all the students stood up.
A.came B.appeared C.arrived D.entered
--Why are you so late for work today?
--______to the office was very slow this morning because of the traffic accident.
A.Driving B.That driving.
应该选什么?为什么吖?详细点好吗.谢谢.

1.D
除了entered 其余三个词都是不及物动词,后面需要加介词形成短语才可以.
2、A
Driving to the office 动词的现在分词短语做主语
B选项中加that是想形成一个主语从句,但是主语从句如果用that做连接词,that在从句中补充当任何成分,只起连接作用,放在句首不可省略,也就是说that需要加一个完整的句子,才能形成主语从句,driving to the office 句子不完整,所以不能加that,B选项排除

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