What should we do to protect the rich soil?
为了保护肥沃的土壤，我们该做什么？
What do you suggest we (should) do to protect wildlife?
你建议我们应该做些什么来保护野生动植物？
What do you suggest we should do to protect wildlife?
请你建议我们应该做些什么来保护野生动植物你呢?。
What do you think we should do to protect wildlife?
你认为我们怎样去保护好野生动植物？
What do you think we should do to protect the earth from getting warmer?
你认为我们应如何行动，防止地球进一步变暖？
What we should do to protect the earth?
我们应该为保护地球做些什么呢？
What we should do to protect the earth?
我们应该为保护地球做些什么呢？
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