----My e-dictionary is nowhere to be found. Who have taken it?
-----Keep looking and you will find it. you have good luck!
A. should; Need
B. should; May
C. could; May
D. could; Need
网友回答
A. should; Need
B. should; May
(答案→)C. could; May
D. could; Need
解析：句意，这是两个人之间的对话。第一个人说：“哪里都找不到我的电子词典。谁会把它拿走呢？” 第二个人说： “继续找，你就会找到它。祝你好运。” could 表示可能性，should表示应该，故第一个空选could，may表示祝愿时，常放于句首。