Practice in using 'would have', 'should have' and 'could have'

I realise now that I [blank_start]should have[blank_end] gone by train as it took far too long by car.

If it hadn't been for the horrible weather, we [blank_start]could have[blank_end] gone out for a walk on the beach.

I [blank_start]should have[blank_end] known better than that!

If you had said you were going to work, I [blank_start]would have[blank_end] offered you a lift

If you had told me you were going to be late, I [blank_start]would have[blank_end] given you a lift.