1. A is used with singular countable nouns that begin with a consonant.

2. An is used with singular countable nouns that begin with a vowel.

3. Some can be used with plural countable nouns and uncountable nouns. Some is usually used in positive statements.
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1) selection of fixtures for the bathroom is not an easy task. first, because this room should be the most lit in the house. secondly, increased humidity requires great care when installing electrical appliances.(3предложения) 2) protect the body and head from stones and ash. the eruption of volcanoes can be accompanied by a rapid flood, mudflows, floods, so avoid the banks of rivers and valleys near volcanoes, try to keep elevated places, so as not to fall into the zone of flooding or mudflow. (2,5 предложения) 3) - turn on the tv or radio, they can receive important information. in the established order, leave (leave) from the dangerous zone of possible catastrophic flooding in the designated safe area or in elevated areas of the terrain; · inform neighbors and close people in the area of ​​the phenomenon of the threat; · prepare documents, valuables, medicines, 2-3 days of unprotected food, bed linens and toiletries, possibly a set of outerwear and shoes; (4,5 предложения) 4) · when in the mountains, watch for the change in the weather; · going out into the mountains, know the places of possible avalanches in the vicinity of your path. they most often come off the slopes with a steepness of more than 30 °, if the slope is without bushes and trees - at a steepness of more than 20 °. with a steepness of more than 45 ° avalanches come off almost every snowfall.(4,5 предложения) 5) if a storm, a hurricane or a tornado caught you on the streets of a settlement, stay as far away from light buildings, bridges, buildings, overpasses, power transmission masts. transfer. try to hide faster in cellars, cellars and radiation shelters, which are in the settlements.(2,5 предложения) 6) • avoid exposure to excessive heat. • wear light, airtight clothing (preferably cotton) with a headdress. • remember that the burned skin stops sweating and cooling. • move slowly, try to stay in the shade more often. • do not drink beer and other alcoholic beverages, this will lead to deterioration of the general condition of the body.(5 предложения) 7) in the situation of an explosion, the most important thing that you can and must do for your salvation is to lie down. do not run. do not save your things. just fall to the ground where you stood. try to remember this.(5 небольших предложения) 8) do not approach the place where the landslide occurred. the danger of re-shifting the soil is not over.  2. look around for any injured people. send the rescue teams to them. 3. be careful with nearby power lines, water pipes or gas pipes. they may be faulty and are capable of causing harm. carefully check the integrity of the sidewalks, roads and bridges for which you have to move.(7 предложения) 9) during shocks, do not enter buildings and do not run around them. it is best to stay in the open, away from buildings and power lines. if you are still near a tall building, stand in the doorway - this will protect you from falling debris of glass, balconies, cornices and parapets.(3,5 предложения) 10) if you have waited for a tsunami in a safe place, then do not rush to go home, wait for the alarm to clear. return to the previous place after you make sure that there were no high waves on the sea for two or three hours. only after receiving the alarm signal, you can be sure that there will be no more waves. удачи тебе! если я тебе с вопросом то поставь лайк, я долго это делала, и брала информацию с интернета. надеюсь тебе понравился мой ответ. ☺

1.

1).Present Simple

2).Past Simple

3)Present Simple

4)Past Simple

5)Present Simple

2.

1.) is

2) was

3) went

4) was

5)spent.

3.

1.doesn't live

2. do you speak

3.did you study.

4.

1.When was your father born?

2.What is your favorite subject this college?

3.We had an English test yesterday.

4.Who told you the answer on the exam question?

5.My friend attends sport sections at school

5.

1.His family is not large

2.Ted doesn't speak English very well

3 We didn't have a farewell party...

6.

1.today

2.often

3.two days ago

4.yesterday

5.usually