4. Use the word combinations to write what the children will do or won't do if they join the "Save the Animals” society.
EXAMPLE: If the children join the "Save the Animals” society, they will
feed birds in winter.
(to feed birds in winter, to clean animals' habitats, to help to
keep rivers clean, to throw (dump) waste into rivers, to pro-
tect wild animals, to damage the environment, to hurt animals,
to take home strayl animals, to prepare food for birds and
animals, to help animals to survive, to catch insects, to collect
birds' eggs)​

Каждые 72 м Шерлок Холмс делает левой ногой - ровно 40 шагов, а доктор Ватсон - 45 шагов. Значит каждые 72 м Ватсон делает левой ногой на 5 шагов больше чем Шерлок,
1 км 620 м = 1620 м
1620 : 72 = 22,5 раз
72 : 0,5 = 36 м Шерлок Холмс делает 40 шагов, левой ногой - 20 шагов. Доктор Ватсон делает 45 шагов, из который левой ногой 23 шага, так как они начали шагать с левой ноги. Ватсон сделал на 3 шага больше Холмса за 36 метров.
22 * 5 = 110 шагов 
110 + 3 = 113 шагов
ответ - Ватсон сделает левой ногой на 113 шагов шагов больше Холмса по пути из деревни в поместье Баскервилей.

Every year at the end of winter Russian people and several other neighboring nations celebrate the Defender of the Fatherland Day. This holiday falls on February 23rd and has special meaning. It was first celebrated in the first half of the 20th century as the day of Red Army. Today, it’s commonly known as the father’s or all men’s day. On this occasion women across Russia and some former Soviet republics prepare small but hearty presents for their fathers, husbands, sons, brothers, boyfriends and simply male friends. Apart from presents they can buy postcards or flowers for them. It is especially appreciated when little girls prepare some handmade stuff for their fathers or brothers. Such small but valuable presents are always cherished. The Defender of the Fatherland Day is observed countrywide. You can see the public concerts, parades, festivals and other topical performances nearly in every large and small city. Children and adults participate in such events to keep their fathers happy and to set a festive mood. The military and veterans are especially honored on this day. As well as the 8th of March, February 23rd is the public holiday in Russia. Offices and schools don’t work, so it’s normal to congratulate male colleagues and classmates a day before or after the actual holiday. Most companies collect a certain amount of money to buy some presents for male employees. Female workers sometimes set a festive table with wine and snacks for their colleagues and together they celebrate the event. Although February 23rd originated as the day of people who serve or used to serve in the army, today even little boys receive presents and congratulations. In the course of time the holiday became better known as Men’s Day.