In sentence number 1, the sentence is in past tense, so, the correct word, would be, arrived.
In sentence number 2, the sentence is, also, in past tense, so, the correct word // phrase, would be, have known.
In sentence number 3, this sentence, as well, is written in past tense, so, the correct word // phrase, would be, has written.
In sentence number 4, this sentence is written in past tense, so, in the first blank, the correct word // phrase to use, is, haven't, and, in the second blank, the correct word // phrase to use, is, was.
In sentence number 5, the sentence is written in past tense, meaning, in the first blank, you should put, missed, and, in the second blank, you should put, have been.
In sentence number 6, this sentence is written in past tense, so, the correct word // phrase to write, would be, has never seen.
In sentence number 7, this sentence is written in past tense, so, the correct word // phrase to write, would be, dreamed, and, in the second blank, write, never saw.
In sentence number 8, the sentence is written in past tense, as well, so, the correct word // phrase to write, would be, was, and, in the second blank, write, founded.
In sentence number 9, this sentence is, also, written in past tense, so, the correct word // phrase to wrote, would be, has never been, and, in the second blank, write, have tried, and, in the third blank, write, have died.
1.) Arrived
2.) Have known
3.) Has written
4.) Haven't
Was
5.) Missed
Have been
6.) Has never seen
7.) Dreamed
Never saw
8.) Was
Founded
9.) Has never been
Have tried
Have died
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I hope this helps!