Which is a reason why sentences should be combined? the writing is connected. the writing is varied. the writing is too long. the writing is choppy.

The writing is choppy.

I believe this is the answer. If the writing was connected, sentences would already be combined. Varied writing and lengthy writing usually has nothing to do with sentence combination.

Acquiring english is a way of learning where you learn english by birth, this includes listening to your parents, brothers and sisters and on the whole learning it from the environment around you while mastering standard english need qualified institutes and teachers who make certain programs and syllabus to you master the standard english. this also can include a long session of academic studies before you can master the standard english.standard english is necessary for literary works, official usage and writing materials for standardized publications or when someone needs to speak publicly. in most cases the employers of a company also demand and like the use of standard english from their employees.