_______your parents frown _______our friendship, we shouldn't see each other anymore

Analyze the question: We need a conjunction for the first blank and a preposition that fits the phrasal verb "frown" for the second blank. The main clause is "we shouldn't see each other anymore," so the first blank must give a reason.

Concept:

• "Frown" takes the preposition on/upon when it means "to disapprove of": frown on / frown upon something.
• "Frown at" means to look at someone or something with a displeased face, which is a literal expression. "Frown over" is not standard.
• The first blank needs a conjunction of reason (as, since, because), not concession (although).

Step by step:

1. A. because/over: "Because" works for the first blank, but "frown over" is not idiomatic. ✗
2. B. since/at: "Since" works as a reason. "Frown at our friendship" is odd, because you frown at a person or thing you are looking at, not at an abstract idea. It also does not carry the sense of disapproval. ✗
3. C. although/at: "Although" gives a contrast, which makes no sense here: "Although your parents frown at our friendship, we shouldn't see each other" is illogical. ✗
4. D. as/upon: "As your parents frown upon our friendship, we shouldn't see each other anymore." "As" means "since/because," and "frown upon" means "disapprove of." ✓

Answer: D. as/upon

Tip: Memorize "frown on/upon" = disapprove. Remember that "frown at" is for looking at a person or thing with displeasure. In JAMB, also check whether a conjunction shows reason (as, since, because) or contrast (although, though) before choosing.