Thank you very much. Could you please check these other sentences? (word choice, reporting verbs)

1) European law says that animal testing cannot be used for beauty and cleaning products. Those who support animal testing say that it is a necessary evil since it helps scientists to develop vaccines as well as new surgical techniques.
2) When he turned to eighteen years old, he discovered to have superpowers.
3) I went to the seaside (and not to the sea) for my holiday(s).
4) The clock landed on (or onto?) the roof of the car.
5) She instructed me not to write on the foolscap paper. (Is "intruct" followed by the infinitive?
6) She forbade me to leave (When is forbid followed by the gerund?
7) You can leave five minutes before the end of the film, she said. She allowed me to leave ......
8) She spurred me to try the exam again the next time.

1. says/states/requires

2. When he turned eighteen years old, he discovered he had superpowers.

3. OK

4. "on" (not "onto")

5. OK (yes, it is)

6. http://www.grammaring.com/to-infinitive-or-gerund-advise-allow-permit-forbid-recommend-require <<best explanation
http://grammar.ccc.commnet.edu/grammar/verblist.htm

7. "You can leave five minutes before the end of the film," she said. (<< direct speech needs quotation marks)

8. delete "the next time" - it's redundant.

Sure, here are the corrections for the sentences along with some explanations:

1) European law states that animal testing cannot be used for beauty and cleaning products. Those who support animal testing argue that it is a necessary evil as it assists scientists in developing vaccines and new surgical techniques.

Explanation: Instead of "says," use a more appropriate reporting verb like "states" to accurately represent the source. Also, replace "say" with "argue" as it conveys a stronger and more authoritative viewpoint.

2) When he turned eighteen, he discovered that he had superpowers.

Explanation: In this sentence, "to" is unnecessary and should be removed. Also, add "that" to make the sentence grammatically correct.

3) I went to the beach for my holiday(s).

Explanation: If you are referring to spending your vacation near the sea, it is more appropriate to say "I went to the beach" rather than "I went to the sea."

4) The clock landed on the roof of the car.

Explanation: Use "on" instead of "onto" in this sentence. "On" is used to indicate the position of one object resting upon another.

5) She instructed me not to write on the foolscap paper.

Explanation: "Instruct" is followed by the infinitive form of the verb, so the sentence is correct as it is.

6) She forbade me from leaving.

Explanation: "Forbid" is typically followed by the gerund form of the verb, so it should be "from leaving" instead of "to leave."

7) You can leave five minutes before the end of the film, she said. She allowed me to leave...

Explanation: The original sentence is correct. Both "said" and "allowed" are appropriate reporting verbs in this context.

8) She encouraged me to try the exam again next time.

Explanation: "Spur" typically means to give a strong encouragement or motivation, so "encouraged" is a more appropriate word choice in this sentence. Additionally, "the" should be removed before "exam" to make it grammatically correct.