Exercise 3. Complete the sentences with must, mustn’t or needn’t: 0. We haven’t got much time. We must hurry.
 
1. We’ve got plenty of time. We hurry.
2. We have enough food at home, so we go shopping.
3. Gary gave me a letter to post. I remember to post it.
4. Gary gave me a letter to post. I forget to post it.
5. There’s plenty of time for you to make up your mind. You decide now.
6. You wash those tomatoes. I washed them.
7. This is a valuable book. You look after it carefully and you lose it.
8. A: What sort of house do you want to buy? Something big?
    B: Well, it be big – that’s not so important. But it have a nice garden
          – that’s essential.
9. Don’t tell anybody what I said. You keep it a secret.
10. You can come with me if you like, but you come if you don’t want to.
англиский язык​

Protect the environment from industrial pollution .Keep the land, air and water clean.Keep our environment clean. All woods are home for animals. So behave as guests. Help nature. Protect it. Тhe Earth is our home.Don,t pollute it. When you hike, leave the place clean. Plant a tree to create home for birds, squirrels and other small animals.
it's not too late to solve these problems. We have the time, the money and even the technology to make our planet a better, cleaner and safer place. We can plant trees and create parks for endangered species. We can recycle litter. We can support green parties and put pressure on those in power. Together we can save the planet and all of us with it.

After my hard and busy school year my summer holidays began. i felt happy and began to plan a lot of wonderful things to do during my summer vacation. i was dreaming about far south countries i always wanted to visit but i had to go to the azove seaside with my relatives. the water was very warm there because you know azove sea isn’t deep. what i liked there - a lot of different kinds of entertainment there: "water mountains", water scooters and discos. there was nothing to do all day except lying in the sun and getting a wonderful tan. i was playing with my little sister on the sand and in the waves teaching her to swim. later i returned to kherson and spent some time in town going out with my friends, reading, listening to music, watching tv, playing computer games. after that i went to the sports camp where i spent seven days. it was very useful experience because i had to get up very early, to train a lot, and to rest very little. but it made me stronger and healthier. i was very happy to return home and i spent several days in my summer cottage, i helped my grandpa to dig the garden, to water plants, and to gather fruit and vegetables. i was fishing with my grandpa and we were cooking fish together. only insects were spoiling my good mood. i enjoyed floating by boat, swimming in the river and helping my grandparents. during my summer holidays i made many new friends, read a lot of interesting books, got to know a lot of useful things. now i feel ready to get back to school. i am happy to meet my friends and teachers.