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Ответ:

11

1. +
2. Mother is proud of his son.
3. This house is similar to the houses standing behind.
4. He is interested in chemistry.
5. He is afraid of spiders.  
6. She is ready for going to school.
7. She is allergic to flowers.  
8. He is bad at History.

12

1. +
2. of
3. in
4. at
5. at
6. in
7. for
8. to