9. The first plant-like organisms probably _____ in the sea, perhaps 3 billion years ago.
(A) life
(B) living
(C) lived
(D) it was livinganswer:
(C) livedexplanation:
The sentence expresses a job, acts, or events in the past / already happened, based on (simple past tense) then the answer is "lived".
the formula of simple past tense: S + V2 + O