1)Here is the letter which John wrote yesterday. May be he forgotten to send it
2)A boy looks very worried. May be something happened
3) May be all students are on... . There are discussed important issues.
4)She speaks English great . May be she lived long in the USA
5)You shouldn't told that
6)He didn't need to translate the whole article
7)You shouldn't shout at her. She isn't guilty.
8)It's late now. He may not work in the library now
9)Where is my... . May be I thrown it out from my bag when I was on the beach.
10)I couldn't phone her. May be she went to the country
12)We can't wait any more
11)Children may not be hungry.They had lunch few minutes ago
13)?
14) In ten years he could read
15)To get there at time, I need to leave the house at 8.30 o'clock
16)Can/may I invite you to the theatre?
17)His leg is broken. He can't take part in the nearest competitions
18)She should help her mother at home.
19)You have to wait a bit
20)Can I have one more cup of tea?
21)Can I look you documents?- здесь я не уверена
22)You should talk with her once more
23)I think, he needs to be very reach
24)We shouldn't be afraid of thieves any more

но здесь возможно несколько ошибок, проверь на всякий случай