Mọi người giúp mình bài này với, mình cảm ơn nhiều ạ.

Giúp mình bài này với ạ, Mình cảm ơn mọi người nhiều

A friend of yours has just decided to change her aspiration from natural science into social science. She has written to you asking for some advice about how to prepare well for the national high school exam . Write a letter (80- 100 words) to your friend giving him/her a few pieces of advice that you think are useful.

mọi người giúp mình bài tập này với, mình cảm ơn ạ.

For years London was synonymous with smog, the word coined at the (53)_____ of the 20th century to describe the city's characteristic blend of fog and smoke. The capital's "pea-soupers" were caused by suspended pollution of smoke and sulfur dioxide from coal fires. The most (54)_____ affected area was the 19th-century residential and industrial (55)_____ of inner London – particularly the East End, which had the highest density of factory smokestacks and domestic chimney pots and the lowest-(56)______ land, inhibiting dispersal. As recently as the early 1960s, the smokier districts of east Inner London experienced a 30 percent reduction in winter sunshine hours. That problem was (57)______ by parliamentary legislation (the Clean Air Acts of 1956 and 1968) outlawing the burning of coal, combined with the clearance of older housing and the loss of manufacturing.

The less visible (58) _____ equally toxic pollutants of carbon monoxide, nitrogen dioxide, ozone, benzines, and aldehydes continue to spoil London's air. Traffic fumes and other exhausts are (59)______ to become trapped between the surrounding hills and below a stagnant capping mass of warm urban air at an altitude of about 3,000 feet (900 metres), causing immediate increases in eye irritation, asthma, and bronchial complaints. But London's weather is too (60)_____ for the development of a full-scale photochemical smog of the kind that can build up under the more stable weather conditions of cities such as Los Angeles.

mọi người giải thích hai câu này giúp mình với, mình cảm ơn nhiều ạ

câu này là sao vậy ạ, mọi người giải thích giúp mình với

mọi người giải thích giúp mình hai câu này được không ạ M cảm ơn