题目内容
What __________ unusual thing it is for me to find __________ UFO!
A. a; a B. an; a C. an; an D. a; an
练习册系列答案
相关题目
题目内容
What __________ unusual thing it is for me to find __________ UFO!
A. a; a B. an; a C. an; an D. a; an