Нужно 24- jenny had a headache. she took an aspirin for her headache. jenny tried………take) an aspirin for her headache. 25- it will not be easy to all the work today. we’ll try……….(finish) the work before tonight. 26- i stayed in jane’s flat while she was on holiday. i remembered that i had to feed her cats every day. i remembered……….(feed) janet’s cat’s every day. 27- remember that you must invite mary to the party next week. don’t forget ……….(invite) mary to the party next week. 28- i’ll never forget……….(see) him for the first time. 29- ali had forgotten……….(take) his overcoat with him. 30- did you remember……….(switch) off the lights? 31- when do you remember……….(see) it last? 32- did you remember……….(post) the letter? 33-. i tried……….(pass) my exams but i'm afraid i failed. 34- if you have got hiccups, try……….(hold) your breathe. 35- if you can’t sleep, you can try………) sheep. 36- she stopped………(eat) chocolate because she wanted to lose some weight. 37- why don't you try………(open) the thin with coin ? 38- do you regret……….(leave) school so early? 39- i don't regret……….(tell) her what i thought about her, even if it made her cry. 40- i remembered………(lock) the door before we left.

24. took
25. finish
26. feed
27.to invate
28.saw
29, to take
30.switched
31.saw
32.to post
36.ate
37.to open
38.left
39. to tell
40. of lock

The nature and the person are closely connected. And if the nature can exist without person, then the person without it can't. Therefore it is so important to live in harmony with the nature.
But, unfortunately, people try to subordinate to themselves the nature, to become her owner, but so it is impossible. The nature needs to be protected, it is our house. Necessary for life the nature gives all to us. If was considered earlier, the natural riches which aren't settled that they in large quantities, then now it becomes clear what is in limited quantity much. The person can't use gifts of the nature constantly as they can disappear soon. A task of the person to preserve the nature and to increase her riches. It is necessary to approach the matter as we are obliged to leave behind to the descendants the rich, beautiful, and pure planet responsibly.

Agrowing number of people think that animals are not to be exploited by people and they should have certain rights. although, there are still some people, who believe that people have the rights to employ animals in order to satisfy their needs, for example, to use them for food or medical research. opinions differ on this issue. most humans think that they are more important on this planet, so to survive they conduct experiments on animals. in my opinion, it is wrong. animals have appeared on this planet just as any other living creature, so they should be treated equally. they also have feelings and they can feel the pain just like people. almost all animal are capable of loving. irrespective of being a bird or a mammal, when animals are loved by people, they can return this love in many ways. thus, it is unfair to ignore their importance. the only difference between animals and human beings is that they cannot speak and express their feelings through words. when domesticated and treated properly, animals are of great help to people. there were times when carriages were pulled by horses, sheep herded by dogs. however, things have changed with the development of science and new technologies. starting from the 20th century, animals are mostly regarded as the source of food and research. they are being tortured to save people from deathly diseases. luckily, there are such organizations as world society for the protection of animals, which try to protect the animals around the globe. their main mission is exposing cruelty and pioneering sustainable methods to avoid animal suffering.