. A:What kind of books do you want to borrow? B:About inventions.You know I have to prepare for the science lesson. A:Great inventions have changed the world a lot.And we humans are really great. B:(2)
That's true
That's true
.People have made lots of inventions. A:(3)
What do you think is the most useful invention
What do you think is the most useful invention
? B:Maybe light bulbs are the most useful inventions. A:(4)
I don't agree
I don't agree
.In my opinion,cars are the most useful. B:(5)
Why do you think so
Why do you think so
? A:Because I can go anywhere quickly and conveniently in my car.