TwooglePlus is a totally free web applicaiton that will serve you to send your Twitter posts with your Google+ circles.
This is a simple tool with which you will be able to share your tweets with whoever you want on Google+. It will be as simple as to select the circle or circles you have created and share your tweets with the people that form part of them. As well as this tool it will allow you to tweet with multiple user accounts. You will also be able to stop and resume their publication on Google+ because it has two buttons to this effect.
Use TwooglePlus and integrate your activity on Twitter via Google+.