九年級英語全冊 unit 13 we’re trying to save the earth section a（1a-2d）課件 新人教版 (2)-文庫吧
2025-05-31 00:23 本頁面
【正文】 _ for fishermen to catch. What caused the problem? People are throwing _______ into the river. Factories are putting _______ into the river. How should the problem be solved? We should write to the _________ and ask them to ________ the factories. Everyone should help to _______ the river. Listen to 2b and plete the sentence. 1.
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