Some useful online exercises for practising linkers and their function

This is the site:
https://www.flo-joe.co.uk/cae/students/writing/linking/

And here are the individual exercises:

Linkers for Contrast:
https://www.flo-joe.co.uk/cae/students/writing/linking/contrast.htm

Linkers for Addition:
https://www.flo-joe.co.uk/cae/students/writing/linking/addition.htm

Linkers for Reason:
https://www.flo-joe.co.uk/cae/students/writing/linking/result.htm

Linkers for Time:
https://www.flo-joe.co.uk/cae/students/writing/linking/time.htm