题目内容：

阅读下面材料，在空白处填入适当的内容或括号内单词的正确形式。

Many people are wondering if it is safe to talk on the cellphones while driving. Most of people think that the use of cellphones should1.        (ban) while they are driving, 2.      in that case accidents can easily happen.

A growing number of states are making rules to keep young drivers 3.      using cellphones while they are driving. When there is 4.      car accident, police officers will find out 5.      any of the drivers is using a cellphone. There have been some very bad car accidents6.      (cause) by drivers being distracted by cellphones.

Drivers sometimes forget to watch the road 7.      (careful) when they are using their phones. Not paying attention to the road can be dangerous, even deadly.

8.      is important for drivers to concentrate 9.      the road. They need to pay attention to 10.      is going on around them. So, stop using your cellphones while driving.