Ответ:

b)

1. The winds influence the climate of the country.

   Do the winds influence the climate of the country? - Yes, they do.

   The winds influence the climate of the country, don't they? - Yes, they do.

2. Many people work in the City.

   Do many people work in the City? - Yes, they do.

   Many people work in the City, don't they? - Yes, they do.

3. Some people speak their mother tongue.

   Do some people speak their mother tongue? - Yes, they do.

   Some people speak their mother tongue, don't they? - Yes, they do.

4. The English people name their national flag "the Union Jack".

    Do the English people name their national flag "the Union Jack"? - Yes,    they do.

    The English people name their national flag "the Union Jack", don't they? - Yes, they do.

5. You live in the capital.

    Do you live in the capital? - Yes, I do.

    You live in the capital, don't you? - Yes, I do.

c)

1. He will spend his free time in the park.

  Will he spend his free time in the park? - Yes, he will.

  He will spend his free time in the park, won't he? - Yes, he will.

2. They will leave the City in an hour.

   Will they leave the City in an hour? - Yes, they will.

   They will leave the City in an hour, won't they? - Yes, they will.

3.  This country will succeed in commerce.

    Will this country succeed in commerce? - Yes, it will.

    This country will succeed in commerce, won't it? - Yes, it will.

4. She will spend her money in the West End.

   Will she spend her money in the West End? - Yes, she will.

   She will spend her money in the West End, won't she? - Yes, she will.

5. The snow will melt.

    Will the snow melt? - Yes, it will.

    The snow will melt, won't it? - Yes, it will.