The football match was called（）because of the snow
Water is a very effective fire extinguishing agent because it（）
Carbon dioxide flooding system is used for extinguishing fires because it reduces the concentration of oxygen in the air to（）.
You should frequently compare drum-mounted and remote-reading water level indicators（） between these have contributed to failures because of overheating through shortage of water, when a boiler was being oil-fired.
The（）into the fire accident was carried out by two policemen.
If there has been a fire in a closed unventilated compartment it may be unsafe to enter because of （）.
At first it was all right because there was plenty of clean air, land and (2) .
She was____ to take the test because she was really sick.
Thomas said that he was late because he was caught in a traffic jam. That was a s tory.
判断下列句子的语调是否正确。（ ）The boy was annoyed ↘ because his toy was badly destroyed.
Mother was worried because little Alice was ill, especially _______Father was away in France.
The birthday party was very quiet because there was only one guest.
The banker was extremely excited because______.
Was it because he was ill______he asked for leave？
He didn’t go to school because he was ill. ____ ____because he was ill ____he didn’t go to school.
Was it six o’clock_____the fire broke out
In the court Mr. Smith was the only ______ who said the fire was deliberate.
Hockey was invented in Canada because______.
There was a big fire last night , but it was ______in time .T
The story was amazing because_____.
Scott McDonald fired one of his employees because the employee
People called the Fire Brigade（军旅) that the fifth floor of their neighboring __________ was on fire.
The father was dissatisfied with his son because . （）
Katherine Mansfield was satirizing the man because（ ）.
