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w… do… .? is was Present tense Past tense are were begin began dig dug put put help start finish carry started fill helped finished carried filled time did they start for Baiyun Hill? 2. How did they go there? 3. Who with them? 4. When did they begin to plant trees? At eight o’clock they started for…. They went there by bus. Miss White and Mr. Chen with them. At nine o’clock they began to plant trees. 5. How di