Can i say this sentence, is this sentence grammatically correct. can i add it in my essay?

the sentence is:

after 4 years, a coincidence no one ever thought would happen, happened.

this question is grammatically incorrect and is illegible to me so i can not answer.

rroosevelt's inaugural address of march 4, 1933 yet our distress comes from no failure of substance. we are stricken by no plague of locusts. compared with the perils which our forefathers conquered because they believed and were not afraid, we have still much to be for. what is the effect of formal language and word choice on the speaker's tone? select each correct answer. it creates a conceited tone. it creates a pessimistic tone. it creates a reassuring tone. it creates a determined tone. it creates a condescending tone.oosevelt's inaugural address of march 4, 1933 yet our distress comes from no failure of substance. we are stricken by no plague of locusts. compared with the perils which our forefathers conquered because they believed and were not afraid, we have still much to be for. what is the effect of formal language and word choice on the speaker's tone? select each correct answer. it creates a conceited tone. it creates a pessimistic tone. it creates a reassuring tone. it creates a determined tone. it creates a condescending tone.