Choose infinitive or gerund and give your reasons:

Model-As some water had got in, engine of the boat couldn't but stop...(to work).-The use of the gerund here is explained by the substantive properties of the process.

1. I'm afraid our camera wants...(to repair). 2. This is not the way...children(to treat). 3.I soon regretted...the doctor's advice(not to follow). 4.I regret...that I can't come to your wedding(to say). 5.Did they teach you...at school(to dance). 6.They avided...hit(to get). 7.Alan can't stand...on trains(to ride). 8.Jim stopped...his shoelace.Wait for him(to tie). 9.Eva is having trouble...on the exam(to concentrate). 10.Please allow me...your Facebook page(to join).

I'd like to tell you about my summer holidays. It was great. I had a lot of fun.
So, in June I go to the summer camp. I made lots of friends there. We had many interesting activities, such as we made a film about our life in the camp and about our friendship. I spent a great time there.
In July my family and I went to Spain. We saw many interesting places there. Most of all I liked swimming with my father and played beach volleyball with my mom and sister.
In August I was in Moscow. The weather was sunny. That's why I spent lots of time in open air. I drew wonderful pictures of my favorite city.
My summer holidays were great!

Past Simple и Present Perfect 
1. I saw you yesterday. 
2. I have read this book. 
3. I understood the text. 
4. I met him yesterday. 
5. He has already found the book. 
6-7. He said, he knew her adress. 
8. I told her this story. 
9. Our team didn`t win the championship last year. 
10. I have already done the exercise. 
11. He wrote a book last year. 
12. He taught me a good lesson. 
13. Sorry, I forgot your address. 
14-15. I took my umbrella and went out. 
15. I left my umbrella at home. 
16. Made in China)) 
17. I have cut my hair off. 
18. I won the prize last time. 
19. I lost my bag yesterday. 
20. He has paid the price. 
21. He came late last evening. 
22. She gave me a good advice. 
23. I`ve already heard the story. 
24. You could learn it by heart, but you didn`t. Shame on you! 
25. I thought he was my friend. 
26-27. Everyone became quiet and sat down in their seats as the show started. 
28. The lesson has already begun. 
29. He drove his car too fast last time. 
30. I spoke to me friend yesterday.