句型转换。 1. There were many students outside.（改为否定句） There _______  _______ students outside. 2. The weather was fine .（对画线部分提问） _______  _______ the weather? 3. There are many tall buildings in this city.（用in the past改写句子） There _______ many tall buildings in this city in the past. 4. This passage comes from a magazine .（对画线部分提问） _______  _______ this passage _______ from? 5. how old, in 2000, was, your grandfather（连词成句） ____________________________________.