Sure, I'll help you correct the verbs and fill in the prepositions or adverbs.

**GT10: Give the correct form of the verbs in brackets.**

1. I **talked** to her on the phone yesterday.
2. I enjoy **walking** among the flowers in the courtyard.
3. She has just **driven** the car to the landing. She's **swimming** in the water now.
4. The carpenter **went** up and down the ladder three or four times.
5. Stop **talking** around the subject and give me the facts about the case.
6. The ball **fell** out of the child's hand and **rolled** under a chair.
7. They have all **agreed** to support the candidate although some members of the group were against him at first.
8. Tom's classmate **hung** the photograph on the wall above his desk.
9. Do you like coffee or milk?
10. He usually **writes** his essays in ink on ruled paper.

**GT11: Fill each gap in the following sentences with a suitable preposition or adverb.**

1. Fresh air is **of** great use **to** our health.
2. I need some paper to write **on** and a pencil to write **with**.
3. He received a medal **for** his great devotion **to** the development of the country.
4. Did the others lock you **out** of the house **on purpose**?
5. I'm sick **of** staying home **within** the four walls.
6. We'll provide you **with** whatever information you ask **for**.
7. Her husband died **of** a heart attack last year. She still can't get **over** the shock.
8. He works **as** a reporter **for** a prestigious central paper.
9. In this life, he has never got **into** trouble **with** the law.
10. On account of the bad weather, they had to call **off** the match.