The space agency hopes to (1) _____ humans to the moon again by 2020.

The last U.S. trip to the moon (5) ______ in December 1972.

At 226,000 miles away, the moon is Earth's (4) _______ space neighbour.

“We will return to the moon no later than 2020 and extend the human presence across the (3) _____ system and beyond,” says Michael Griffin, the head of NASA.

Back in 2005, the U.S. space agency announced its plan to send four astronauts to the moon (2) _____ the next 15 years.

You can be connected to the Internet directly through your own computer or you can hook up to an access system which allows you (5) _________ some of the Internet’s services.

Soon, scientific and educational institutions as well as research departments became (4) _________ in linking up, and, before long, the Internet had expanded into an international information and communication network.