______ Chinesecompanies are manufacturing the rooftop water heaters.
______ Chinesecompanies are manufacturing the rooftop water heaters.
Currently there are ______ rooftop solar water heaters in China.
Currently there are ______ rooftop solar water heaters in China.
Electric heaters have the electric energy _____________ (transform) into heart.
Electric heaters have the electric energy _____________ (transform) into heart.
The rooftop solar water heaters provide ______ without consuming any fuel.
The rooftop solar water heaters provide ______ without consuming any fuel.
Solar water heaters priced much ______ in America than a comparable system in China.
Solar water heaters priced much ______ in America than a comparable system in China.
Solar water heaters help to lower energy cost and cut carbon emissions.
Solar water heaters help to lower energy cost and cut carbon emissions.
We have received your letter of September 12，（）we are glad to know that you are interested in our electric heaters.
We have received your letter of September 12，（）we are glad to know that you are interested in our electric heaters.
The unusually cold weather this winter gave birth to a larger ______ of heaters. A: consume B: consuming C: consumption D: consumers
The unusually cold weather this winter gave birth to a larger ______ of heaters. A: consume B: consuming C: consumption D: consumers
Solar water heaters would be immesely ______ since it would help dramatically lower our energy costs.
Solar water heaters would be immesely ______ since it would help dramatically lower our energy costs.
Why is it so rare to see rooftop solar water heaters in America while such devices are commonplace in China?
Why is it so rare to see rooftop solar water heaters in America while such devices are commonplace in China?