Question

insert one dash where needed.
—
slapped
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and win the grand prize a trip for two to hawaii.

Explanation:

To determine where to insert the dash, we analyze the sentence structure. The phrase "a trip for two to Hawaii" is a noun phrase that provides more detail about "the grand prize". In English, we can use an em dash (—) to set off this explanatory or descriptive phrase. Looking at the sentence: "and win the grand prize a trip for two to Hawaii", we need to insert the dash between "prize" and "a" to properly separate and explain the grand prize.

Answer:

and win the grand prize—a trip for two to Hawaii.