What is the setting of act ii of the crucible?
a. the following day at the home of john and elizabeth proctor
b. reverend parris's home, about a week after the accusations of witchcraft have begun
c. the proctors' home, eight days after the girls have begun to accuse people
d. the salem meeting house, just before abigail's trial

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.