1.Your tiredness may lead to your laziness.
Because you......are tired, you may be lazy...................................................................................................................
2.Despite the heavy rain, Tom and Jake are still working in the garden.
...........Tom and Jake are still working in the garden................................. though......................the rain is heavy......................................................
3.We like to talk to My because of her good sense of humour. 
...................My has a good sense of humour........................., so ......................we like to talk to her...........................................
4Due to the accident, the highway was blocked for an hour last night.
.......................The highway was blocked for an hour last night...............................because there .................was an accident.............................................
5.The construction site nearby is very noisy, but I can concentrate on my study very well.
Although ...................the construction site nearby is very noisy, I can concentrate on my study very well.............................................................