Перевод с рус-на англ прошу помочь

1 I can't finish work today
2 can't be, that he has forgotten about it
3 it is possible for me to take your magazine
4 I couldn't find this book in shop
5 can't be, that it was there
To 6 you followed apologize
7 I think that I can help you
8 I, should be, have forgotten to send the letter

You couldn't help to translate into English!
I will be strongly grateful!

1 I cannot finish job today
2 cannot be, that he has forgotten about this
3 it is possible for me to take your journal
4 I could not find this book in shop
5 cannot be, that he was there
6 you should apologize
7 I think, that I can assist you
8 I, should be, have forgotten to send the letter

1 I can not finish the job today.
2 Сan not be that he forgot about it.
3 Сan I get your magazine.
4, I could not find this book in the store.
5 Сan not be that he was there.
6 Уou should have to apologize.
7, I think I can help you.
8 I must have forgotten to send a letter.

1 I cannot finish the job today.
2 He can't have forgotten about it.
3 May I take your magazine?
4, I wasn't able to find this book in the store.
5 He couldn't have been there
6 Уou should have apologized.
7, I think I will be able to help you.
8 I must have forgotten to send the letter.

1. I can't finish the work today.
2. He can't have forgotten about it.
3. May I take your magazine?
4. I couldn't find /wasn't able to find this book in the store. (два варианта возможны)
5.He can't be there. (не может быть, чтобы он был там сейчас) He can't have been there. (не может быть, чтобы он был там в какой-то момент в прошлом) (Но couldn't здесь употреблять нельзя! )
6. You should have apologized.
7. I think I'll be able to help you. / I think I can help you. Оба варианта возможны. Но думаю, это упражнение из учебника на отработку базовых знаний, . значит выберите лучше первый вариант
8. I must have forgotten to send the letter.

Today I cant finish this job
He can't have forgotten about it.
I wasn't able to find this book in the book store.
He couldn't have been there
You should have apologized.
Уou should have apologized.
I think I will be able to help you.
I must have forgotten to send this letter.