it is the only planet whose surface can be seen （）earth.用on和

it is the only planet whose surface can be seen （）earth.用on和 Mars,it is the only planet whose surface can be seen from ea Venus is the only star that can be seen now. the planet earth is our home planet和earth不全是名词吗? Whose can it be 和whose would it be为什么只能说whose can it be 请解释下面这题——Whose book is this on earth?——It must be one of the 英语翻译Environment is the earth,the only planet and home for th whose turn is it-------（be） on duty today The earth is the third planet. only ------the surface of the earth is land.A.part of B.a pa （）of its surface of the earth is sea. Earth is the only planet we know of that has life.