Чому дітям, які народилися восени чи взимку, лікарі призначають вживати вітаміни D??

Помогите пожалуйста!Как складывались отношения Османской империи и европейских государств?

Это история Нового времени 7 класс.

Заранее спасибо!

Помогите с формулой разность температур t2-t1 через C 8 класс. Заранее спасибо))

переделайте предложения в Active voice                                          1 This mountain has never been climbed before

2 She told me that those newspapers had been carefully put away where they would not be lost

3 Why have these cups been put here in this cupboard ?

4 Evidently Nick had been told to go home at once when I gave him the things his mother had asked for , for he refused even to take a cup of tea

5 Invitatuons have been sent to all the old pupils to be present at the schools thirtieth anniversary 

6 All the passengers in the bus were listerning to the story of the boy who had been saved from drowning be the quickness of the driver 

7 The work was finished in time

8 The child is taken care of

9 When was it done ?

10 What museums were visited last year ?

11 Have your compositions been handed in ?