3 Complete each conversation according to the situation and the words in brackets. 根据所给情境和括号中的提示词，补全对话。
(1) You are discussing great inventions with your friend Jason.
Jason: I think the light bulb is the greatest invention. What do you think?
You: I totally agree with you! With light bulbs, we can study and work safely at night. Life would be very different without them! (agree; use an example)
(2) At the car exhibition, Mrs Brown is amazed at the car models.
Mrs Brown: I really think that cars are one of the greatest inventions. They allow us to get around so quickly! Don’t you think so?
Mr Brown: (To me, high - speed trains; list figures)
(3) After school, Ming gets some ice cream from the fridge and enjoys every bite.
Ming: Fridges are really the best invention! They keep food fresh and cold for days. What do you think, Mum?
Mum: (I’m afraid, think, washing machines; use an example)
(4) During a typhoon, your cousin Taylor shows you her mobile phone.
Taylor: Wow, check this out! My phone’s got a satellite (卫星) connection — it’s still working on such a stormy day! Isn’t the mobile phone the greatest invention in the world?
You: (cool, think, communication satellites; give a fact)

(2) To me, high-speed trains are even greater! They can run at a speed of over 300 kilometers per hour, much faster than cars.
(3) I’m afraid I think washing machines are better! They help us wash clothes easily, so we don’t have to spend hours doing it by hand.
(4) That's cool! But I think communication satellites are greater. They make it possible for mobile phones to work even in such bad weather.