6. Because the weather was cold, we kept the fire burning all day.
​A. Because the cold weather, we kept the fire burning all day.
​B. Because of the cold weather, we kept the fire burning all day.
​C. In spite of the cold weather, we kept the fire burning all day.
​D. We kept the fire burning all day because of the weather was cold.
7. The taxi driver is friendly. He took me to the airport.
​A. The taxi driver who took me to the airport is friendly
​B. The taxi driver whom took me to the airport is friendly.
​C. The taxi driver whose took me to the airport is friendly.
​D. The taxi driver is friendly who took me to the airport.
8. The street is very noisy. This makes it difficult to sleep.
​A. The street is very noisy, this makes it difficult to sleep. ​
​B. The street is very noisy, who makes it difficult to sleep. ​
​C. The street is very noisy, which makes it difficult to sleep.
​D. The street is very noisy, which this makes it difficult to sleep.