C. Complete the sentences with the correct prepositions. 1. Teenagers make a great effort to fit . . . . 2. I don't really get . . . . . . my sister. We're very different. 3. I can always rely . . . my mother for help. 4. Henry is stressed . . . because he's been taking exams all week. 5. David's not here right now. He has just stepped . . . . 6. My grandmother always said that there's more . . . cooking than just putting the food in7. He wasn't exactly telling the truth. . . . other words, he was lying. 8. I have been working . . . this project all morning. ​