Which best completes the sentence?
she must have been rehearsing every night because she is dancing so .
a. good
b. well
b?

In the sentence:

She must have been rehearsing every night because she is dancing so well.

Sentence could be simple (one independent clause), compound (two independent clause with coordinating conjunction), complex (a subordinate & independent clause) and compound-complex sentences (subordinate & two independent clause).

for example: in, he, a,from

the correct answer is the name of the author of the quotation appears at the text leading up to it   apex 2018