Which sentence uses the simple past form of the verb cook?

a.
we were cooking tirelessly at the spaghetti dinner this evening.

b.
we cooked tirelessly at the spaghetti dinner this evening.

c.
we had cooked tirelessly at the spaghetti dinner this evening.

d.
we cook tirelessly at the spaghetti dinner this evening.

expository writing is one of the most common types of writing.

the sentence that avoid faulty coordination is:

culture, which is well represented in philadelphia, plays a major role including theatre, music, and the visual arts.  

faulty coordination occurs when the writer gives equal importance two different ideas (clauses) which in fact are not equivalent. in order to correct a misplaced clause or idea, the writer can place less important or emphatic ideas in a relative clause as in the previous sentence.