1) Air pollution irrates our respiratory systems or Air pollution irrates our respiratory system ?
2) Could you tell me the idiom of which the meaning is: You are angry about something and you blame it on something else ?
3) The average number of the population of a nation (number) divided by the area (km), how do we call the result?
4) What is the Aussie way of saying good-bye ?
5) Do we ever add s to vocabulary, ie vocabularies?
2) Could you tell me the idiom of which the meaning is: You are angry about something and you blame it on something else ?
3) The average number of the population of a nation (number) divided by the area (km), how do we call the result?
4) What is the Aussie way of saying good-bye ?
5) Do we ever add s to vocabulary, ie vocabularies?