If there were life on Mars,such life forms_______unable to survive on earthA isB areC would beD will be选那个

来源：学生作业帮助网编辑：作业帮时间：2024/05/28 01:02:53

If there were life on Mars,such life forms_______unable to survive on earth
A isB areC would beD will be选那个

C
虚拟语气