試題詳解

21. Sammy has 7 Sunny Sun pictures. She wants to get a Sunny Cup. How can she get one?
(A) Use 6 Sunny Sun pictures and pay $100.
(B) Use 6 Sunny Sun pictures and pay $200.
(C) Spend $150 to get 3 more Sunny Sun pictures.
(D) Spend $200 to get 4 more Sunny Sun pictures.