1. This is her driverless car  
- This diverless car is hers.
2. We will use high speed trains in the next five years. 
- High speed trains will be used in the next five years.
3. Is your helicopter black,Peter? (Tag questions) 
- Is the black helicopter yours, Peter?
4. They predict a 10% car price in crease. (will) 
-  They predict that the car price will  increase by 10%.

 Mong được câu trả lời hay nhất ak

Đáp án + Giải thích các bước giải : 

1 . This driverless car belongs to her

2 . High speed trains will be used in the next five years

3  . Your helicopter is black Peter , isn't it ?

4 . They predict that a 10% car price will increase