Man _______ on the earth for thousands of years .选项:a、is existedb、are existedc、has existedd、have existed

分类: 作业答案 • 2022-07-22 08:26:08

问题描述：

Man _______ on the earth for thousands of years .
选项:
a、is existed
b、are existed
c、has existed
d、have existed

答

选C