1.We should do our best to protect the rare water resources. 2.We must act to follow up the new situation of the development . 3. What's the meaning that you lie me ? 4. The more serious is that you have not realized your mistake. / It is more serious that you have not realized your mistake. 5. Cooperate with him , Why ? /What is the meaning to cooperate with him ? 1.We should do our best to protect the rare water resources. 2.We must act to follow up the new situation of the development . 3. What's the meaning that you lie me ? 4. The more serious is that you have not realized your mistake. / It is more serious that you have not realized your mistake. 5. Cooperate with him , Why ? /What is the meaning to cooperate with him ?