Water expands ______ freezing, as can be deduced from occasional breaks in water pipes in

How far water drops to the turbines in a power station is known as ______ .A．the headsB．th

In North America,______is considered as the largest fresh water lake in the world.A．Lake M

Please turn ______ the switch as soon as the water boils.

People in some parts of the world often take their water for ______. They use as much wate

______from space our earth with water covering 70% of its surface appears as a lue pl

Here tourists could hear the ________ stream splashing as water tumbles over the dam