Internet 係用複數or 單數

單數....

"internet" 本身係一個 uncountable noun, 所以係決定唔到佢係單數定複數~~

The Internet(full name internetworking) is the worldwide, publicly accessible network of interconnected computer networks that transmit data by packet switching using the standard Internet Protocol (IP). It is a "network of networks" that consists of millions of smaller domestic, academic, business, and government networks, which together carry various information and services, such as electronic mail, online chat, file transfer, and the interlinked Web pages and other documents of the World Wide Web.

And of course it is 單數

單數

Internet 標示解釋
n.
1. 【電腦】網際網路