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句型转换。 1. This is a very interesting storybook. (改为同义句) This is ______ interesting storybook. 2. They are going to take a taxi to the bank. (对画线部分提问) ______ ______ ______ ______ are they going to the bank? 3. Where does she come from? I want to know. (合并为一句) I want to know ______ ______ ______ from. 4. Betty's last trip was pretty good . (对画线部分提问) ______ ______ Betty's last trip? 5. Do you enjoy traveling by train or by airplane? Why? (根据实际情况回答) ____________________________________