要进入高速公路，你必须支付通行费。

To enter the motorway, you must pay a ___toll.

该市对新建的隧道征收通行费，以资助其维护。

The city imposed a ___toll on the new tunnel to help fund its maintenance.

如今许多高速公路为了方便都使用电子收费系统。

Many highways now use electronic ___toll collection systems for convenience.