Choose the correct answer. He has been playing tennis since 8 o’clock, ... ?

Choose the correct answer. He said, “I shall unlock the secrets of their success.”

Choose the correct answer. ... has parked in my parking place. Where shall I put my car now?

Read the text. Then choose the correct answer

We felt the referee was guilty  ... favoritism because he should have awarded us two penalties, but he didn't. However, he gave one to the other team, although they didn't deserve it.

Choose the correct answer. Don’t worry about your exam. I am sure you ... .

Choose the correct answer. Do the homework ...! I can’t help you.

Choose the correct answer. You ... tell anyone else. It’s our little secret.

Choose the correct answer. Jane ... her house painted at the moment.

Choose the correct answer. Stop ... this terrible noise at once!

Choose the right expression of the underlined numeral. Electrical energy costs $0.12 per kilowatt - hour.

Choose the correct answer. My father ... me to school this week because we had an accident and our car is being repaired.

Choose the correct answer. Is there a picture on page … ichki chizilgan your book?

Choose the correct answer. I always run ... money at the end of the month.

Choose the correct answer. The damage to the building could be ... than the company expected.

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Because the weather is  ... changeable here, I usually take a cardigan with me in case it gets colder later in the day as I can't stand feeling cold all day.

Choose the correct answer. If we ... a yacht, we would sail around the world.

Choose the correct answer. Those animals are very ... .Be careful!

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Because the weather is so changeable here, I usually take a cardigan with  ... in case it gets colder later in the day as I can't stand feeling cold all day.

Choose the correct answer.
The sound of a small plane . . . my head interrupted my thoughts.

They … worried. There really was no danger.

There … 1490 people in the Titanic who were killed when she sank.

Choose the correct answer. The box . . . only some old books and a fewpictures.

… rich should help … poor people.

Andrew ..... eat five slices of pizza in just one meal.

William is very excited … starting his new job.

Everybody knows that … cats are very independent animals, but … one I have is an exception.

She never complained … her salary after getting married … her boss.

Sorry, but I can't help ___.

It is an exhilarating feeling to stand at the top of a mountain and look down. There are amazing views. You can tell by looking at a mountain which plants can grow at different heights. The higher you go up the mountain, the colder it is. For every 820 feet you climb, the temperature drops one degree. If you look at the very top of a high mountain, there is usually no or very little vegetation or plants there. Icy wind blows and prevents trees from growing. When mountains get higher than 8,200 feet, there is a timberline. Trees cannot grow above the timberline. The trees along the mountainside help to protect the mountain soil. This prevents the mountain soil from eroding. When there is too much erosion, there are problems with flooding and landslides. In the wintertime, these cleared-off areas can trigger avalanches. It is very cornmon to see conifer trees growing on mountains. Most conifers are called evergreens, which means they stay green all of the time. They do not lose their leaves like other trees. The leaves on evergreens are needles. When old needles fall off, they are replaced with new ones. Conifers are able to handle the harsh weather conditions of the mountains. They can survive the cold and the elements. There are also other types of trees that grow on mountains. In lower portions of the mountain, you can find chestnut, oak, and maple trees.

What is this passage mainly about?

Read the text and answer the questions according to it. Algebra, algorithm, quadratic equation, sine function ... just some of the terms of math which would not be known to us but for Al-Khwarizmi, an astronomer, geographer and founder of several branches and basic concepts of mathematics. In Geography he revised and corrected Ptolemy’s view and produced the first map of the known world in 830 AD. He worked on measuring the volume and capacity of the earth, and contributed to work related to clocks, sundials and astrolabes. His full name is Abu Abdallah Muhammad ibn Musa Al-Khwarizmi. The lastmentioned name refers to his birthplace, Khwarizm, south of the Aral Sea. He was born around 780 in the town of Kath, part of Khwarizm. Kath is now buried in the sand. He died around 850. He was sent to Baghdad by Caliph Al-Ma’mun and appointed court astronomer. Algebra derived its name from the title of his work “Hisab Al-Jabr wal Muqabalah”. AlKhwarizmi emphasised that he had written his algebra book to serve the practical needs of the people concerning the matters of inheritance, law suits and commerce. He considered his work as worship to God.

The passage above defines that Caliph Al-Ma’mun called Al-Khwarizmi to his court ...