правильно вставить слова I bought a marvellous picture ofEiffel Tower during my trip to Paris, France ( an, the)

I bought a marvellous picture of the Eiffel Tower during my trip to Paris, France.

1 If Peter comes to my place we will go to play in the yard.

2 If Peter does not come to my place, I will watch TV.

3 If Frank's parents have their holidays in summer, they will go to the seaside.

4 If they have their holidays in winter, they will stay at home.

5 If the fog thickens, Harold will put up the tent for the night.

6 When I finish my work, I will go to the cinema.

7 We will buy this book as soon as our mother gives us some money.

8 When we come to your place you will show us your present.

9 I will return you your ring when you ask me.

10 Wait for my friend until he comes from the shop.

11 My father had started writing before the sun rose.

12 As soon as you finish your study I will present you a new flat.​

Объяснение:

11 предложение, я выполнил не по заданию. Там связка past perfect и past simple. Уточни когда будешь сдавать.

1) Density is measured in kilograms per cubic meter.

2) Most materials have a higher density than water and sink in water.

3) The density of the material is very important, especially in aviation.

4) Young's modulus is the ratio of the applied force to the elastic deformation of a given material.

5) The more rigid the metal, the less it deforms under load.

6) when the metal is stretched, it first flows, that is, it is plastically deformed.

7) Lead, copper, aluminum and gold are the most malleable metals.

8) Creep resistance is a very important property of materials used in aircraft engines.

Объяснение: