A:①②③
B:①②④
C:①③④
D:②③④
读甲、乙、丙、丁四幅图(如图),回答下题.
假如我国某经贸代表团赴东南亚采购货物并观光考察.据此完成下题.
The box is __________ of the three boxes, I think.