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Timber is the most ancient structural material. In comparison with steel timber is lighter, cheaper, easier to work and its mechanical properties are good. On the other hand, timber has certain disadvantages. First, it burns and is therefore unsuitable for fireproof buildings. Second, it decays.
At present an enormous amount of timber is employed for a vast number of purposes. In building timber is used too.

Timber is a name applied to the cut material derived from trees. Timber used for building purposes is divided into two groups: softwoods and hardwoods. Hardwoods are chiefly used for decorative purposes, as for paneling, veneering in furniture and some of them are selected for structural use because of their high strength and durability. In modern construction timber is often used for window and door frames, flooring, fences and gates, wall plates, for temporary buildings and unpainted internal woodwork.
Timber cannot be used for either carpenters’ or joiners’ work immediately it has been felled because of the large amount of sap which it contains. Elimination of this moisture increases the strength, durability and resilience of timber.

Dear [name],
Thanks for your letter. It was lovely to hear from you.

Speaking of pets, I've always wanted to have a dog, too. Eventually, my parents decided to agree and bought me a large dog although we also live in a flat. I think you should convince them to buy a dog anyway because not only you will have a pet but also a true friend! My mom used to be angry about the mess my dog caused but she got used to it.

By the way, is your flat really small? If so, you might consider buying a smaller dog anyway. Is there enough space for your pet? The good thing is that in case your flat is small,you won't have to do a lot of cleaning. Do you usually do the housework? 

Well, I have to go now. I promised my Mom to clean the bathroom.
Can't wait to hear from you!

Love,

Ваше имя

I had an amazing summer. Usually I spend all my time sitting at home and doing nothing interesting at all but these three months were different. I met a lot of really unusual and fascinating people. We were joking and laughing a lot and doing fun stuff together. Now we are not talking much because of the school and it's kind of sad. But I hope that things are going to be better and that's the rest of the year will be as cool as my summer.

Объяснение:

У меня было замечательное лето. Обычно я провожу свое время сидя дома и не делая ничего интересного, но эти три месяца были другими. Я познакомилась с очень необычными и обворожительными людьми. Мы много шутили и смеялись, делали много прикольных (забавных, веселых) вещей вместе. Но сейчас мы редко разговариваем из-за школы и это немного грустно. Но я надеюсь, что скоро все наладится и весь остальной год будет таким же крутым, как и мое лето.