Sentence 1: Mary gathered her coupons for a trip to the grocery store. 
 Sentence 3: Then, Mary wheeled her cart to the cashier 
 Sentence 4:  A line grew behind her as the cashier slowly rang up her sales 
 Sentence 5:  When Mary handed over the stack of coupons, the line groaned 
 Option 1: She walked the aisles, carefully choosing items matching the coupons. 
 Option 2: When she paid for her groceries, she found she only saved $3.00.