Tiếng anh lớp

29. It’s usually Sarah who deals ..................... all the little problems.

Wind, water, air, ice and heat all work to cause erosion. As the wind blows over the land, it often (26) _______ small grains of sand. When these grains of sand strike against solid rocks, the rocks are slowly worn away. In this way, even very hard rocks are worn away by the wind.

When particles of rocks or soil became loosened in any way, running water carries them down the hillsides. Some rocks and soil particles are carried into streams and then into the sea.

Land that is covered with trees, grass and other plants wears away very slowly, and so loses very (27) _______ of its soil. The roots of plants help to (28) _______ the rocks and soil in place. Water that falls on grasslands runs away more slowly than water that falls on bare ground. Thus, forests and grasslands help to slow down erosion.

Even where the land is (29) _______ covered with plants, some erosion goes on. In the spring, the (30) _______ snow turns into a large quantity of water that then runs downhill in streams. As a stream carries away some of the soil, the stream bed gets deeper and deeper. After thousands of years of such erosion, wide valleys are often formed.

She didn’t stop her car because she didn’t see the signal.

Having that accident has brought ___a complete change in his attitude to other people.

Mark the letter A, B, C, or D on your answer sheet to indicate the option that best completes each of the following exchanges.

Question 23: A porter is talking to Mary in the hotel lobby.

- Porter: "May I help you with your suitcase?" - Mary: " _____"

A. You're welcome. B. What a shame! C. Yes, please. D. Me too.

Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.  

 Thanks to the invention of microscope, biologists can now gain insights into the nature of the human cell. 

Unless he _______ you, don’t give him anything.

If a student __________ it is very unlikely that he will receive a good education.

Complete the sentence.So far this week, I _____ two tests and a quiz.