Anyone with an email address (can)______ join the social networking site Facebook.
could
It quickly (become)________ one of the most popular websites on the internet.
became
British scientist Sir Timothy Berners Lee (think)_______ of the first internet web browser, the World Wide Web.
thought
The Wikipedia website (begin) _______
began
Jimmy Wales (write)_______ the first words: ‘Hello, world!’
wrote
They wanted to check when their coffee was ready. It (become)______ the first webcam.
became