Нужна , кто знает. нужно в пропусках поставить who, that или which complete the sentences using who, that or which, but only where necessary – leave a blank if possible. in one sentence two answers are possible. 1. we examined the articles of the pension fund stated the conditions of employment with the company. 2. the pension fund accounts we examined were impeccable. 3. he’s lost the chances retraining gave him. 4. peter, has only been with the company for a few years, can make full use of the workers. 5. where are the data measure the amount of work you have done? 6. this is the application came in today’s post. 7. if the shares mr. harper owns are bought by a rival firm, the present set-up could change completely. 8. the chairman, is an elderly man, feels very tired. 9. a customer is someone buys something from a shop. 10. macroeconomics is the branch of economics analyses interrelationship among sectors of economy.

Look!  There are a lot of people in the park today! It’s Sunday. The weather is fine and the sun is shining. It is very warm.
Look! Jim is playing a game with a clown! Many bоуs are riding their bikes. Some girls are talking and eating ice-cream. An old lady is walking out a dog. Some boys are playing ball. A man is taking pictures of his family in the park. There are a lot of people on the pond. Some of them are boating and some are feeding birds. You can see people having a rest under the trees or sitting on benches and talking or listening to music.Everybody is having a great time!

In my opinion the worst way of  behaviour in school is aggressive behaviour of some students towards some other shy and weak kids or towards newcomers. The most annoying to my mind is the behaviour when aggressive and wicked students laugh at shy students, give them offensive nicknames or spoil their school supplies (=things). They try to make those kids unpopular and can kick or hit a weak child. The so-called bullers try to  become popular in such a way.  I also don't like it when, for example, a boy or a girl brag about (=boast of) their rich parents or electronic devices that other students can't afford.
To conclude, bullying, of course, is the most unpleasant and annoying way of behaviour at school!
На мой взгляд, худшим поведения в школе является агрессивное поведение некоторых учеников по отношению к другим застенчивым и слабым детям или к новичкам. Больше всего раздражает, когда агрессивные и злые студенты смеются над застенчивыми учениками, дают оскорбительные прозвища или портят им школьные принадлежности (=вещи). Они пытаются сделать этих детей непопулярными и могут пнуть или ударить слабого ребенка. Так называемые буллеры стараются таким образом стать популярными.  Мне также не нравится, когда, например, мальчик или девочка хвастаются своими богатыми родителями или электронными устройствами, которые другие студенты не могут себе позволить.В заключение, издевательства буллеров над слабыми, конечно, самый неприятный и раздражающий поведения в школе!