In romeo and juliet act one - scene five

who says the following and why ?

a) "is she a capulet? o dear accountant, my life is my foe's dept."

b) "my only love sprung from my only hate. too early seen unknown and known too late."

why does the crew join ahab's quest without hesitation?

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.