We have the right to ________ our traditions, our heritage and our languages.

Using bicycles ______ greatly to people’s physical fitness as well as easing traffic jams. 

Some miners are trapped when the local mine was flooded，but luckily，400 kilograms of milk ________to them during the rescue．

We must ____ to the public the simple fact that drugs are very dangerous．

Mary and I see each other ________, but not as often as we used to.