a
1. 10 years
2. an electric heater
3. 3 or 4 different kinds electric heaters
4. and this is our best electric heater. it costs a lot of money, but it saves half of your electricity and electricity is very expensive now, isn't it?
5. yes, it is very expensive
6.yes they will
b
cold
c
5, 1, 4, 6, 3, 2
a
1. 10 years
2. an electric heater
3. 3 or 4 different kinds electric heaters
4. and this is our best electric heater. it costs a lot of money, but it saves half of your electricity and electricity is very expensive now, isn't it?
5. yes, it is very expensive
6.yes they will
b
cold
c
5, 1, 4, 6, 3, 2