Sure! Here are the completed sentences:

1. How much is the blue schoolbag?
→ What is the price of the blue schoolbag?

2. Mr Binh is going to France by plane.
→ Mr Binh will travel to France by plane.

3. Does Mai’s house have five rooms?
→ Are there five rooms in Mai’s house?

4. No house on the street is older than this house.
→ This house is the oldest on the street.

5. I won’t be able to do anything unless I have a quiet room.
→ If I don’t have a quiet room, I won’t be able to do anything.

6. Minh likes teaching robots very much.
→ Minh is very interested in teaching robots.

7. The students started to collect old clothes for their charity programme last week.
→ The students have been collecting old clothes for their charity programme since last week.

8. Nobody in our class is as intelligent as Hoa.
→ Hoa is the most intelligent student in our class.

9. Living in the city is more expensive than living in the countryside.
→ Living in the countryside is less expensive than living in the city.

10. My brother plays football very well.
→ Minh is very good at playing football.