Complete the complex sentences with the correct subordinating conjunction:
I’m going to the Supermarket I need to buy some groceries
I prepared dinner I got home.
She decided to trust Mike he was a reliable guy.
we went to school, she decided to investigate the issue.
Lisa decided to break up with Tom he was too worried about his career.
John bought a new car he had received one as a gift last week.
Derek days that there will be a problem he doesn’t bring the car back.
Sara will have finished the homework the time you get here
it’s raining, she’s going for a walk.
she passes her final exam, she will fail the class.

ответь сначала на русском, как ты сама думаешь. 
Могу предложить перевод, может и сорентируешься
Мы нуждаемся в воде? Как много воды ты выпиваешь в день? Растения нуждаются в воде? Могут ли морские животные жить без воды? Можем ли мы ? Вода загрязнена в нашей стране, в твоей местности/регионе? Должны или не должны мы защитить морскую воду? Как мы должны защитить ее ? Есть ли у нас достаточное количество питьевой воды?
В общем удачи, тут размахнуться на целое эссе можно. Тренируй свой английский с: 

Hi Bill . How are you?Thank you perfectly . You know Bill, I want you to meet Harry. He's one of my oldest friends .Hello , Harry.Hello , Bill .
2) Good morning , Mr. Johnson, you feel yourself ?Thank you well, and you , Mr. Green ?Thank you I also good.
3) Good morning , Mr. Hill. Nice day , is not it?- Wonderful day . How do you feel ?- Okay, thanks , and you?- Today is better , thank you . Goodbye .- Goodbye was glad to see you .
4) Hey Mike . Glad to see you , how are you ?Nothing , thank you go to work . See you later.Bye
5 ) Hello Mr. Blake. Came to say goodbye to you .Good afternoon , Mr. Ivanov , are you leaving?Yes, back home . I finished my work here.How sorry we loved you .- Thank you very kindly . Have a nice day .- My greetings to your wife .Thank you, give up a date.