For question 6, identify the subordinate clause in the sentence. because the auditorium only seats 100 people, the theater mush have two showings of the movie.

The answer is: "Because the auditorium only seats 100 people,"

Subordinate clauses possess a subject and a verb, and begin with a relative clause or a subordinate conjunction, like because. They cannot stand as independent sentences because they do not express a complete thought. Instead, they need a to join a main clause in order to make sense. For example, "the theater mush have two showings of the movie."

mica tricku

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.