The trip was hard work. It was a valuable experience for me.

→Although/Though the trip was hard work, it was a valuable experience for me.

→The trip was hard work, but it was a valuable experience for me.

Sam did quite well in the exam. He was unprepared.

→Sam did quite well in the exam although/though he was unprepared.

→Sam was unprepared, but he did quite well in the exam.

Linda still apares time to help people. She is always very busy.

→Linda still apares time to help people although/though she is always very busy.

→Linda is always very busy, but she still apares time to help people.

She was nervous. She kept getting the questions right.

→Although/Though she was nervous, she kept getting the questions right.

→She was nervous, but she kept getting the questions right.

Simon has already made great progress in his studies. He works really hard.

→Although/Though Simon has already made great progress in his studies, he still works really hard.

→Simon has already made great progress in his studies, but he still works really hard.

Tony found it difficult to foreigners in English. He knew his English was good.

→Tony found it difficult to foreigners in English although/though he knew his English was good.

→Tony knew his English was good, but he found it difficult to foreigners in English.

It was Sunday. My mother got up early as usual.

→Although/Though it was Sunday, my mother got up early as usual.

→It was Sunday, but my mother got up early as usual.

She decided to go about further her studies. She was not well prepared.

→She decided to go about further her studies although/though she was not well prepared.

→She was not well prepared, but she decided to go about further her studies.

I could hardly understand what he was saying. He was reading loudly.

→He was reading loudly although/though I could hardly understand what he was saying.

→I could hardly understand what he was saying, but he was reading loudly.

Milk is good for breakfast. I perfer orange juice.

→Although/Though milk is good for breakfast, I perfer orange juice.

→Milk is good for breakfast, but I perfer orange juice.

My grandpa is very old. He still does housework every day.

→Although/Though my grandpa is very old, he still does housework every day.

→My grandpa is very old, but he still does housework every day.

I love climbing. It is a bit dangerous.

→I love climbing although/though it is a bit dangerous.

→Climbing is a bit dangerous, but I love it.