Linkers – contrast, addition, reason and result	

What is the relationship between the pairs of sentences below  - contrast, addition or reason and result?
Use a linking expression to make the relationship between the ideas more clear.	

The Trocadero Plaza is popular with shoppers. 
The Trocadero Plaza has good public transport. 

Most tourists go to Golden Sands Beach. 
Golden Sands Beach is one of the most polluted in the country.

I'm going to do a course in Italian next year. 
I'm going to improve my Mandarin next year. 

I'm not very good at languages. 
I'm going to do a course in Mandarin next year. 

I'm quite good at languages. 
I'm going to take courses in Korean, Japanese and French next year. 

The traffic was terrible this morning. 
I managed to get to work on time. 

The traffic was terrible this morning. 
I was about 25 minutes late for work. 

Smoking is bad for your health. 
Smoking is antisocial because many people find it unpleasant. 
Smoking is a waste of money. 

I don't think Charlie Wong would be a good candidate for this job. 
He is hard working and reliable. 
He has no experience in this area. 
He has never shown the slightest interest in this kind of work. 
He is rather old. 
Some possible answers (There are many others)	

The Trocadero Plaza is popular with shoppers because it has good public transport. 

Most tourists go to Golden Sands Beach. 
However, it is one of the most polluted in the country.

I'm going to do a course in Italian next year. 
I'm also going to improve my Mandarin. 

I'm not very good at languages so
I'm going to do a course in Mandarin next year. 

OR (depending on how you look at it)

Although I'm not very good at languages,
I'm going to do a course in Mandarin next year. 

I'm quite good at languages so
I'm going to take courses in Korean, Japanese and French next year. 
OR (depending on how you look at it)

Even though I'm quite good at languages,
I'm going to take courses in Korean, Japanese and French next year. 

Although the traffic was terrible this morning,
I managed to get to work on time. 

The traffic was terrible this morning. 
Therefore, I was about 25 minutes late for work. 

Smoking is bad for your health and it is antisocial because many people find it unpleasant. Besides, it is a waste of money. 

I don't think Charlie Wong would be a good candidate for this job. 
Although he is hard working and reliable, he has no experience in this area 
and he has never shown the slightest interest in this kind of work. 
Besides, he is rather old.