【評論主題】39. Today, many people volunteer their time and energy to help ________.(A) another(B) some others(C
【評論內容】以數量來解析：-----------------------------------當數量=2時：I have two pens. One is red ,and the other is blue.當數量=3時：I have three pens. One is red, another is blue ,and the other is green.當數量>3時：He has four kids. One of them is a .....看完整詳解