Complete the sentences. Which type
of conditional is used in each one?

1 It there had been less pollution, climate
change (not/become)
such a big problem.
2 If you only use social media, you...
(not/spend) enough time talking with your friends face to face.
3 If they had left home on time, they …
(not/miss) their flights to Almaty
4 When you donate to the homeless shelter,
you... (make) a difference.
5 if we only ate organic food, we
(stay) strong and healthy
​

1 He told me that he was going to the theatre that night.
2 I told them that I could give them my uncle's address.
3 Oleg said that his room was on the second floor.
4 Misha said that he had seen them at his parents' house the year before.
5 She said that she didn't go to that shop very often.
6 The woman said that man had spoken to her on the road.
7 The teacher told the class that they would discuss that subject the following day.
8 Mike said that they had bought those books that day.
9 She said that I would read that book in the 9th form 10.
10 The teacher told me that I hadn't done my work well.

To begin with, the issue of space exploration is very difficult. Some people believe that it is necessary to do researches of the Universe, to seek, if there is life on other planets. 
On the one hand, they are right. Science does not stand still, science is moving forward. Powerful and strong nations prove to the world their capabilities, the availability of a huge number of scientists and finances, it is possible to talk about the development of civilizations, and their wish to be the first in the world in science and technology. 
On the other hand, you can just think about thousands and thousands of sick children who can't get qualitative treatment because of lack of money. So decide which is more important: the life of a child or a rich uncle's trip to the moon, an uncle who gets mad from fat and who just has nowhere to put the money because he has already everything.  After all, the final result of space research is space travel. 
In conclusion, I would like to say that I am against space exploration, I am for a healthy nation, I would like to spend the money on sick kids, to give them life, and  cosmos... without it you can live. 
This is my personal opinion.

Начну с того, что вопрос изучения космоса очень сложный. Некоторые люди считают, что нужно заниматься исследованиями вселенной, искать, есть ли жизнь на других планетах. С одной стороны они правы.  Наука не стоит на месте, наука двигается вперед.  Мощная и сильная держава доказывает миру свои возможности, наличие огромного количества ученых и финансов, то есть можно рассуждать о развитии цивилизаций, о том, чтобы быть первыми в мире в области науки и техники. 
С другой стороны, можно просто задуматься о тысячах и тысячах больных детей, которые не могут получить качественного лечения по причине отсутствия денег у их родителей. Вот и решайте, что важнее: жизнь ребенка или полет на Луну очередного богатенького дяденьки, который бесится от жиру и которому некуда девать деньги. Ведь конечный итог космических исследований - это космические путешествия. 
В заключение скажу, что я против космических исследований, я за здоровье нации, я за то, чтобы тратить деньги на больных малышей, дарить им жизнь, а космос... без него можно прожить. 
Это мое сугубо личное мнение.