The children (play) quietly on the floor at 6 o'clock yesterday .

played. Это просто вторая форма глагола

1. Mother cooks chicken soup for dinner, doesn't she? (Разделительный  вопрос)

 Does mother cook chicken soup for dinner? (Общий вопрос)

 Does mother cook chicken soup for dinner or for lunch? (Альтернативный вопрос)

 Who cooks chicken soup for dinner? (Вопрос к подлежащему)

 What does mother cook for dinner?  (Специальный вопрос - начинается  со специального вопросительного слова)

2. I like vegetable, don't I?

   Do I like vegetables?

   Do I like vegetables or fruits?

   What do I like?

   Who likes vegetables?  

3. They go shopping in the afternoon, don't they?

   Do they go shopping in the afternoon?

   Do they go shopping or swimming in the afternoon?

   Who goes shopping in the afternoon?

   When do they go shopping?

4. He buys a new car, doesn't he?

   Does he buy a new car?

   Does he buy a new car or a bike?

   What does he buy?

   Who buys a new car?

5. The children eat ice cream for dessert, don't they?

   Do the children eat ice cream for dessert?

   Do the children eat ice cream or fruit for dessert?

   What do the children eat for dessert?

   Who eats ice cream for dessert?

Если долго и пристально смотреть, то начинает казаться, что эти маленькие символы скорости сорвутся с места. Можно каждый год менять сверхкрутые автомобили на зависть пешеходам, а можно собирать чемпионат мира по ралли на стене собственной квартиры и получать от этого колоссальное удовольствие. Каждому свое.
If long and fixedly, it begins to seem that these little symbols speed will scuttled away. Can each year to change svergnutyj cars for envy pedestrians, and you can build the world rally championship on the wall of his apartment and get enormous pleasure. To each his own.