boils.)

What _happens_ when it lightnings? (Thunder, discharge of
electricity, flash.)

What must immigrants coming into this country _have_?
(Money, freedom from disease, character.)

What did Arnold _become_? (A traitor, a British general, an
outcast, a repentant man.)

What _is_ the cow? (A mammal, a quadruped, a producer of
milk, butter, and beef; an herbivorous animal.)

What _about_ the Monroe Doctrine? (A dozen different
things.)

What _of_ the animals in the temperate zone?

Questions may be so general as to be indefinite. The teacher asks,
"Where is Chicago?" The class may answer, "In Illinois on Lake
Michigan; in North America; in Cook County." The teacher should know
just what answer he desires, and then ask, "In what State; on what
continent; on what lake; or in what county?"

Other illustrations of vagueness coming from the use of words of too
general a meaning are found in such questions as, What _kind_ of man
was George Washington?

_When_ does a person need food?