Can you please check if my answers are correct?

1.)The pupil had not(brang, brought) the homework. Answer: The pupil had not brought the homework.
2.) Has the choir ever(sung,sang) that tune?
Answer: Has the choir ever sung that tune?
3.) The seamstress should have (broughten, brought) more fabric.
Answer: The seamstress should have boughten more fabric.
4.) By the end of the contest, the contestants will have( ate, eaten) at least two pies.
Answer: By the end of the contest, the contestants will have eaten at least two pies.
5.) I could have( drank, drunk) a gallon of water. Drunk
6.) Has your blouse (shrank, shrunk) in the laundry? Shrunk
7.) Has the sun(rose, risen) earlier than usual?
Rose
8.) The ship must have(sank,sunk) during the battle. Sank
9.) The boxer(sprung,sprang) to his feet during the count. Sprung
10.) My opponent has (beat,beaten) me at the game of chess. Beaten
11.) She (began,begun) to feel ill. Began
12.)Wind may have (blew, blown) the table over. Blown
13.) Has the puppy (laid,lain) there long? Lain
14.) Several children(swam,swum) in the lake. Swam

3, 7, 8, 9 are wrong. The others are right.

1.) The pupil had not brought the homework. (Correct)

To determine the correct answer, you need to know the past tense form of the verb "to bring," which is "brought." The correct sentence should be "The pupil had not brought the homework."

2.) Has the choir ever sung that tune? (Correct)
To determine the correct answer, you need to know the past participle form of the verb "to sing," which is "sung." The correct sentence should be "Has the choir ever sung that tune?"

3.) The seamstress should have boughten more fabric. (Incorrect)
To determine the correct answer, you need to know the correct past participle form of the verb "to bring," which is "brought." The correct sentence should be "The seamstress should have brought more fabric."

4.) By the end of the contest, the contestants will have eaten at least two pies. (Correct)
To determine the correct answer, you need to know the past participle form of the verb "to eat," which is "eaten." The correct sentence should be "By the end of the contest, the contestants will have eaten at least two pies."

5.) I could have drunk a gallon of water. (Correct)
To determine the correct answer, you need to know the past participle form of the verb "to drink," which is "drunk." The correct sentence should be "I could have drunk a gallon of water."

6.) Has your blouse shrunk in the laundry? (Correct)
To determine the correct answer, you need to know the past participle form of the verb "to shrink," which is "shrunk." The correct sentence should be "Has your blouse shrunk in the laundry?"

7.) Has the sun risen earlier than usual? (Correct)
To determine the correct answer, you need to know the past participle form of the verb "to rise," which is "risen." The correct sentence should be "Has the sun risen earlier than usual?"

8.) The ship must have sunk during the battle. (Correct)
To determine the correct answer, you need to know the past participle form of the verb "to sink," which is "sunk." The correct sentence should be "The ship must have sunk during the battle."

9.) The boxer sprang to his feet during the count. (Correct)
To determine the correct answer, you need to know the past tense form of the verb "to spring," which is "sprang." The correct sentence should be "The boxer sprang to his feet during the count."

10.) My opponent has beaten me at the game of chess. (Correct)
To determine the correct answer, you need to know the past participle form of the verb "to beat," which is "beaten." The correct sentence should be "My opponent has beaten me at the game of chess."

11.) She began to feel ill. (Correct)
To determine the correct answer, you need to know the past tense form of the verb "to begin," which is "began." The correct sentence should be "She began to feel ill."

12.) Wind may have blown the table over. (Correct)
To determine the correct answer, you need to know the past participle form of the verb "to blow," which is "blown." The correct sentence should be "Wind may have blown the table over."

13.) Has the puppy lain there long? (Correct)
To determine the correct answer, you need to know the past participle form of the verb "to lie," which is "lain." The correct sentence should be "Has the puppy lain there long?"

14.) Several children swam in the lake. (Correct)
To determine the correct answer, you need to know the past tense form of the verb "to swim," which is "swam." The correct sentence should be "Several children swam in the lake."