Chứng mình đúng đắn câu tực ngữ có công mài sắt có ngày nên kim

yes, since there is a positive and a negetive if the positive and negitive wasn't there wouldn't a flow electricity in it.

i believe the answer is: returns on investments, no wages

people who belong in upper class society would most likely get there by obtaining multiple source of income, which a certain percentage of ownership for businesses. since most of them are job creator, they would most likely get their money from profit, not wages.

answer; english speaking;