we should protect the Earth.改成一般疑问句

we should protect the Earth.改成一般疑问句 We should keep quiet in the library. 改成一般疑问句 should protect we earth the 连词组句 The p__ Earth is our home.We should protect it. why should we protect the Earth?英语作文 We should do something to protect the earth.to后 We should play a part in saving the earth改为一般疑问句 "We should do what we can to protect the earth"这句英语中的"what w We should save water and tree to protect the Earth 对we shoul to protect the earth,we should save energy.对前半句提问 It means we should be quiet.(改成一般疑问句） 问句改为一般疑问句The earth goes around the sun怎么改成一般疑问句?