—What’s Jack up to in the shoe shop? He’s there for ages.
—It’s that he hasn’t decided which pair to buy.
A. sure
B. obvious
C. confusing
D. curious
网友回答
A. sure
(答案→)B. obvious
C. confusing
D. curious
解析：考查形容词：A. sure确定的，B. obvious明显的，C. confusing 困惑的，D. curious好奇的，句意：--杰克在鞋店做什么？他在那里很长时间了。--很明显他还没决定该买哪一双。选B。