Which sentence does not contain any errors? a. let's put our guests in gregs' room tonight. b. are both of the actresses families' coming to the show? c. its a bad day to try to host an outdoor picnic. d. whose muddy shoes are these on my clean kitchen floor?

The sentence that does not contain any errors is D. Whose muddy shoes are these on my clean kitchen floor? This is because the possessive pronoun whose is correctly used here. In A, it should be Greg's, and not Gregs'. In B, it should be actresses' families, and not actresses families'. In C, it should be it's, because that means it is, and not its, which is a possessive pronoun (the dog wagged its tail).

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