Rewrite Topic Strings

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Instructions: Revise the highlighted sentence in each group of sentences. In parenthess after your revise, indicate which type of topic string it is (continuous or shifting). To review, see this discussion of transitions (opens in a separate browser window).

Pluto is the second-largest dwarf planet in the solar system. Approximately one-fifth the mass of the Earth's Moon, Pluto is primarily composed of rock and ice.


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