Chọn phương án đúng

1. Ann: I heard that in the future people will build cities on the ocean. Do you think that will be possible?
David:
With the help of modern technologies, we can build cities on water
C. It's very unlikely
D. I don't believe it's true
A. I'm not really sure about it
B. I have no doubt about it
2. Ann: Do you think the government can build our first smart city in this area?
Smart technologies are very expensive. We don't have Al experts either.
C. Of course
David:
A. I'm not really sure about it
B. I have no doubt about it
D. I'm positive
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