Mark the letter A, B, C, or D to indicate the sentence that best combines each pair of sentences.
1. Air pollution levels have increased in many countries. This is also linked to biodiversity loss.
A. Air pollution levels have increased in many countries, which is also linked to biodiversity loss.
B. Air pollution levels have increased in many countries, but this is also linked to biodiversity loss.
C. As air pollution levels have increased in many countries, this is also linked to biodiversity loss.
D. Air pollution levels have increased in many countries, that is also linked to biodiversity loss.
2. My classmate was searching for more information about recycling plastic containers. I was writing an introduction for our presentation.
A. My classmate was searching for more information about recycling plastic containers, or I was writing an introduction for our presentation.
B. While my classmate was searching for more information about recycling plastic containers, I was writing an introduction for our presentation.
C. My classmate was searching for more information about recycling plastic containers when I wrote an introduction for our presentation.
D. My classmate was not only searching for more information about recycling plastic containers, but also writing an introduction for our presentation.
3. I was invited to join a cultural exchange programme. This gave me the opportunity to travel and meet people from all over the world.
A. I was invited to join a cultural exchange programme because this gave me the opportunity to travel and meet people from all over the world.
B. Although I was invited to join a cultural exchange programme, this didn't give me the opportunity to travel and meet people from all over the world.
C. I was invited to join a cultural exchange programme, which gave me the opportunity to travel and meet people from all over the world.
D. I was invited to join a cultural exchange programme and this didn't give me the opportunity to travel and meet people from all over the world.
4. We arrived at the party yesterday. Everybody was dancing and having a great time.
A. Everybody was dancing and having a great time when we arrived at the party yesterday.
B. While we were arriving at the party yesterday, everybody was dancing and having a great time.
C. We were arriving, dancing, and having a great time at the party yesterday.
D. Everybody liked dancing and having a great time, but we didn't arrive at the party yesterday.