16.Have you ever had chocolate chip cookies?In fact,this favorite food was invented by(1)
.One day in 1930,a woman (2)
(call)Ruth Wakefield was making chocolate cookies.She ran out of chocolate powder.So she divided a piece of chocolate into little pieces.Then she added all of (3)
(they)to the dough(面團(tuán)) that the chocolate would melt(融化).However,the pieces of chocolate still (4)
(remain)hard.When Ruth took them out of the oven,she invented chocolate chip cookies.Soon chocolate chip cookies became popular (5)
people around the world.