1.  However the author overlooks the possibility that the employees can kill their time in variety of ways, such as playing PC games which are not necessary to connect with the Internet.

2.  However the author overlooks the possibility that the employees can kill their time in variety of ways, such as playing PC games which are not necessary to connect with the Internet.

3.  But with various electronic products becoming wide-spread nowadays, employees can kill the time with MP4 and IPad, or even simply use their telephones to surf on the Internet, which has been advanced enough to bring in as much enjoyment as PC.

4.  However the author overlooks the possibility that the employees can kill their time in variety of ways, such as playing PC games which are not necessary to connect with the Internet.