—Where can I tie the horse?—Oh you can tie it to of the tree.A. bothB. everyC. eachD. eith

问题补充：

—Where can I tie the horse?

—Oh,you can tie it to of the tree.

A. both

B. every

C. each

D. either

答案：

A. both

B. every

C. each

(答案→)D. either

解析：由句意可排除前三个选项，而且every只能作定语，不可和of短语连用。