Here are possible answers to fill in the blanks:

1. I am learning **to speak** English.
2. Do you mind **(giving)** me a hand?
3. I advised you **to start** looking for a flat at once.
4. He decided **to study** biology.
5. I dislike **waiting**.
6. An instructor is coming **to show** us how to use the aquaplaning.
7. Some people seem **to have** a passion for writing **for** the newspaper.
8. I tried **to explain** to him but he refused **to listen** and went on **grumbling**.
9. By **offering** enormous wages, he is persuading men **to leave** their present jobs and **work** for him.
10. She suggested **going** to the museum.
11. They plan **to start** college in the autumn.
12. I don’t want **to leave** yet.
13. Many young people are fond of **playing** football and other kinds of sports.
14. Your house needs **decorating**.
15. I remember **allowing** them to play in my garden.
16. We found it very difficult **to work** with Gamma.
17. The driver stopped **to have** a coffee because he felt sleepy.
18. Please wait a minute. My boss is busy **writing** something.

If you need further assistance, let me know!