CCSS.ELA-LITERACY.L.2.2.C
Use an apostrophe to form contractions and frequently occurring possessives.
110.4.b.11.D.x
End punctuation, apostrophes in contractions, and commas with items in a series and in dates
End punctuation, apostrophes in contractions, and commas with items in a series and in dates
Use an apostrophe to form contractions and frequently occurring possessives.