个used before nouns without fixed measure words of their own; used between a verb and its object
了used to indicate anticipated or assumed action
人human being; an adult human being
办公室office; department of institute, school or enterprise that handles administrative affairs
千thousand; a great amount/number of
卖sell; make a living by one's labor, skill, etc.
在exist; join or belong to an organization
多much; exceed the expected/intended quantity
杂志journal; random/miscellaneous notes
的used to indicate a modifying and modified relationship
这些[indicating two or more persons or things] these
门door; something that opens and shuts
馒头steamed bread; steamed stuffed bun