48 The Passive: by phrases Use the cues in brackets to answer the questions. Use the Passive and
by phrases.
1 Who discovered the hole in the ozone layer?
The hole in the ozone layer was discovered
d by a
satellite . (a satellite)
2 What destroys the windows in the International
Space Station?
(pieces of
space junk)
3 Who saw the last solar eclipse?
(millions of people in Asia)
4 Who played the captain in the 1995 film Apollo
13?
(Tom Hanks)
5 Who has explored Venus and Mars?
(space robots)
6 What observes the sky twenty-four hours a day?
. (the Hubble telescope)