The earth is our home. To protect the earth, what should we do? What should n't we do? Please pay attention to these two key words: should and should n't. We should save water. We should save energy. We should...The earth is our home. To protect the earth, what should we do? What should n't we do? Please pay attention to these two key words: should and should n't. We should save water. We should save energy. We should save trees. We should use paper bags and glass bottles. We should put rubbish in the bin. We should plant more trees.展开更多
文摘The earth is our home. To protect the earth, what should we do? What should n't we do? Please pay attention to these two key words: should and should n't. We should save water. We should save energy. We should save trees. We should use paper bags and glass bottles. We should put rubbish in the bin. We should plant more trees.
