Sentence 1: Sam's boss told her to write the week's specials on the chalkboard. 
 Sentence 3: When she was done her hands were covered in chalk 
 Sentence 4:  Sam went to the bathroom to wash it all off 
 Sentence 5:  She cleaned her hands but her shirt was still dusty 
 Option 1: She picked up a blue piece of chalk and began to write. 
 Option 2: She chose a chalk marker instead of chalk because markers kept hands clean.