1. Grammar. Choose the right verb to the Conditional Sentences. 1. If I ……(see) mouse in the kitchen, I would (be) afraid.
2. We would take a tent if we …….(know) about the forecast before.
3. If it rains / it’ll rain today, we won’t go to the park.
4. If I’m not in a hurry tonight, I write / I’ll write to her.
5. She would fail/wouldn’t fail the exam if she ………..(prepare).
6. They will visit/visit the Eiffel Tower if they …….(go) to Paris.

Arguments for animal testing:
1 recearch on animals has brought us many benefits
2 recearch on animals helped us discover ways to help people and other animals live healthier lives in the future 
3 scintists claim that there is no other way to test if certain drugs are safe for living beings
или без общего 1го предложения, что исследования на животных принесли много пользы...разделить 2е предложение на 2 части...одна относящаяся к людям, другая к животным:
1 recearch on animals helped us discover ways to help people  live healthier lives in the future
2 recearch on animals helped us discover ways to help other animals live healthier lives in the future
3 scintists claim that there is no other way to test if certain drugs are safe for living beings

arguments againts animal testing:
1 many of the experiments cause pain to animals
2 animals have right too and it's cruel to make them suffer
3 not all animal testing has brought to human beings

Справа пишете адрес и дату
Слева:
Dear Friend (можно заменить на имя человека, которому пишете)
Thank you for your letter. I am glad to hear from you. I am sorry, I haven't written you for a long time because I was busy at school.
I am very happy that you found a good job for summer. And it is wonderful that you love it so much.
I don't work during the holiday season. 
I think teen jobs aren't important and won't help us in our future career.
Summer job isn't very popular in our country.
How are you? How are your parents? Tell them "Hi" from me.
Write me soon, please.
Love, (Ваше имя)