Помогите перевести с 9 по 15 пожалуйста

Question

Помогите перевести с 9 по 15 пожалуйста

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Comments

9) was writing an essay yesterday when I came

Answer 1

9) was writing an essay yesterday when I came
10) has been writhing an essay for two hours when I came
11) will be writing an essay tomorrow 
12) will be writing an essay tomorrow at 2 o'clock

Comments

13,14,15?

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13) will be writing an essay for two hours when I come (не знаю насчет этого предлоэения) 14) will have written an essay at 2 o'clock 15) will write an essay if he learns the words

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спасибо