help with hard writing questions

  1. A dispute has arisen between Crystal City's two competing department stores. [each of which sells] mainly clothing. expensive jewelry, and unusual furniture. (A) each of which sells (B) each of them sells (C) each of which selling (D) both sell (E) are selling

A is correct
i didn’t understand why this sentence isn’t a run on sentence. as i think about it “A dispute has arisen between Crystal City’s two competing department stores” is a full sentence and “[each of which sells] mainly clothing. expensive jewelry and unusual furniture”

as i think about it “each of which sells” can be replaced with " a department stores sells" because it reffers to a singular.

22.though generally insecure and (a)(excessively) deferential (b)(to the opinions) of the others, president buchanan would sometimes adhere stubbornly ©(on) ill-advised policy, even (D)(in the face) of vigorous criticism.

the answer is C i choose D

The timber used to frame houses comes from pine trees, [as does the sheets on which newspapers are printed].
(A) houses comes from pine trees, as does the sheets on which newspapers are printed
(B) houses comes from pine trees, and so does the sheets on which newspapers are printed
© houses and the sheets on which newspapers are printed comes from pine trees
(D) houses comes from pine trees, as do the sheets on which newspapers are printed
(E) houses, like the sheets on which newspapers are printed, come from pine trees

the answer is D but i thought the answer was C or A

“Each sells items” is an independent thought. “Each of which sells items” is not; it needs more to make sense. Of which WHAT?? Since “each of which sells” is therefore a dependent clause, it can be attached to an independent one without being a run-on.

The phrase is “adhere to.” Idiomatic, I guess.

Sheets is plural. Does (singular) cannot be paired with sheets. D has “do” (plural) instead.

is it correct to write “each of them sells”?

Sure, that would be an independent thought. Ex. There are two stores in town. Each of them sells only one item.

“Each of which” is a relative clause (http://www.chompchomp.com/terms/relativeclause.htm). Might be good to research those a bit because they can be tricky. (I’m still not completely clear on them in Spanish…qué lástima!)

thank u very much