a black material used for making road surfaces, that consist of small stones mixed with tar.

a liquid that is painted onto wood, metal, etc. and that forms a hard shiny transparent surface when it is dry

1. a tall plant like grass with a hollow steam that grows in or near water 2. a small thin piece of cane, metal or plastic in some musical instruments such as the oboe or the clarinet that moves very quickly when air is blown over it, producing a sound.

another word for 'always'

1. to become lost; to be stolen 2. to go in the wrong direction or to have the wrong result

very willing to help

very suitable for a particular purpose from clever new ideas --> .... ways of saving energy

to make use of sth, especially sth bad, as a means of achieving sth, often because there is no other possible solution