问题
选择题
_____ increasing population is ______ environment problem in many countries.[ ]
A. The; an
B. An; the
C. An; an
答案
答案：C
搜题请搜索小程序“爱下问搜题”
_____ increasing population is ______ environment problem in many countries.[ ]
A. The; an
B. An; the
C. An; an
答案：C
