问题
选择题
Many wild animals in the world ________, so we must take measures to protect them.[ ]
A. are dying out
B. have died out
C. died out
D. die out
答案
答案：A
搜题请搜索小程序“爱下问搜题”
Many wild animals in the world ________, so we must take measures to protect them.[ ]
A. are dying out
B. have died out
C. died out
D. die out
答案：A