In Edgar Allan Poe's "The Black Cat the narrator's escalating violence and his reaction to his own actions Illustrates the theme of
vulnerability
circle of life
responsibility
coming of age

the present continuous is a verb tense which is mainly used to indicates that an action is in progress at the moment of speaking.  

it is formed using: person + verb to be (am/is/are) +verb + - ing form  

example: i am studying at this moment .

in addition, the present continuous is also used in order to express things that will or will not happen in the near future.

example: i am having dinner with some friends tonight.

the speaker sometimes   uses it   to express that an action is repeated and it causes irritation on the part of the speaker

example: my sister is constantly complaining about everything.

the major theme of langston hughes’s montages of a dream deferred is the deferred, or delayed, american dream of african americans. the poem is about how african americans failed to achieve their goals in time:

this year, maybe, do you think i can graduate?

i’m already two years late.dropped out six months when i was seven,

a year when i was eleven,

then got put back when we come north.

to get through high high school at twenty's kind of late–

but maybe this year i can graduate.

the poem also depicts how african americans had to keep postponing their needs with a hope that someday they would be able to obtain what they desired:

maybe now i can have that white enamel stove

i dreamed about when we first fell in love

eighteen years ago.

but you know,

rooming and everything

then kids,

cold-water flat and all that.

but now my daughter’s married

and my boy's most grown–

quit school to work

and where we're moving

there ain't no stove–

maybe i can buy that white enamel stove!

however, despite their deferred dreams, the poem shows the refusal of african americans to give up easily and let go of their dreams of a better life. their dreams may have been delayed, but they did not lose hope.

is the answer