【简答题】句型转换 1. Tom went to the zoo four times last year.(对划线部分提问) Tom to the zoo last year? 2. Lily has eaten fish and chips.(改为否定句) Lily fish and chips. 3. Mr. Liu began to teach English in 2005.(用现在完成时改写句...
【简答题】When people talk about air pollution, they are usually thinking about outdoor air 1 . But do you know that there is 2 air pollution inside homes, offices, hotels and other buildings? The air in your h...