The cómic continúes?

The cómic continúes. . complete it with the simple past or past perfect tense. Raj. (show)his friend Carl what. . (happen) in his bedroom. Carl was worried about him, so he. (a. explain)to raj that some days ago, at the chemistry lab, he. (b. fall)Dow and (c. Hit) his head badly. Raj immediately. Remembered the incident, but he also. . (d. Remember)that something strange. . (e. Happen)before to him. Astrange guy. . (f. Follow)him. Raj. (g. Realized) he. (h. notfall ) ; down as he remembered someone. (i. hit)him from behind. Suddenly, everything was clear to raj. Before the incident. (jhappen), he. . (k. Create)a fórmula to become invisible. Unfortunately, impostor already. . (l. Take)them.