In March 2004 a new planet was__________ 10 billion kilometers from the Earth and was named Sedna. It was found by the Hubble __________. Some people say Sedna is not really a planet. Anyway, the news _________ very exciting because the planet _________ beyond the planetary Solar System. Space now has become _____________! Such countries as Russia, the USA and Japan are planning to send more money on it. Do you think space exploration so important?
1. a) invented ​b) discovered ​c) opened
2, a) microscope ​b) periscope ​c) telescope
3. a) is ​ b) are ​c) will be
4. a) found ​b) finds ​c) was found
5. a) large ​b) larger ​c) the largest
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