Answer:
1. Please give me your book.
2. This is a wonderful toy!
3. Brush your teeth twice a day.
4. The medicine is not very strong.
Step-by-step explanation:
An imperative sentence is a sentence that makes a command, order, request, or instruction. Most often the subject is "you" which is often excluded in the actual sentence but is implied and understood.
An exclamatory sentence is a sentence that exclaims or expresses emotions like happiness, surprise, excitement, etc. It will always end with an exclamation mark.
A negative sentence contains any words that contain the word "not" in it and most often any word that states a wrong or false statement.
The given sentences after changing them in the respective sentences are as follows-
1. Please give me your book.
2. This is a wonderful toy!
3. Brush your teeth twice a day.
4. The medicine is not very strong.