Every time you post a tweet or retweet on your Twitter profile, it will be automatically posted to your Facebook Timeline or Page
To do this Login to your twitter account and then settings navigate to apps quick link https://twitter.com/settings/applications
Now you can see a app link call Facebook Connect click on it and login with your Facebook account
click on ok and allow the app to get your profile info, click ok for second time and allow the app to post on behalf of you.
Now every time Every time you post a tweet or retweet on your Twitter profile, it will be automatically posted to your Facebook Timeline.
Now on the the Twitter under the app Allow posting to one of your pages click on allow you will see a pop up “Twitter would like to manage your Pages” click ok the pop up disappears under post to my Facebook page select your page that’s it. click on disconnect cancel anytime.