(Sound waves) travel (in the air) in much (the same) way (like) water waves spread on the water.

单项选择题(Although) the wages for all the members of the working staff (increase regular), so (their expenses do); for the prices for everything (are increasing dramatically) at the same time.

单项选择题He did not like abstract painting (at all), so (the more) he looked at the drawings (exhibited) in the art gallery, (the little) he liked them.