In the following passage, the subjects have been left out from
most of the sentences. Fill in the blanks with appropriate subjects.
What is science 12 is usually
used to mean one of three things, or a mixture of them.
13 do not think 14 need to he precise— 15 is not always
a good idea to be too precise. 16 means, sometimes, a special method of finding things out. Sometimes
17 means the body of knowledge arising
from the things found out. 18 may also
mean the new things 19 can do when
20 have found something out, or the
actual doing of new things.
(from Richard Feynman, The Meaning of It All)