Stream locomotives ____ in the 19th century. Many interesting exhibits ____ at the Science Museum. Eduard Slavoljub Penkala ____ in Hungary. The first television set ____ by John Logie Baird. The first personal stereo ____ Apple II. Lots of useful information ____ on the Internet. Heart transplant surgery ____ worldwide today. iPods ____ for listening music. The first atomic bomb ____ in Japan. Space shuttles ____ for space exploration by astronauts. Millions of emails____ and received every minute. The first TV remote controls ____ in the 1950s in the USA.

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