Ребят,помогите с предлогами пожалуйста .Я вроде знаю.Но для сравнения напишите пожалуйста ваше мнение.

1)When the teacher entered__the classroom__the Lowood charitable institution.all the boys rose __their feet to greet him.

2)The old man could hardly climb__the stairs.

3)The door opened .a man motioned __me to enter,and I was admitted__the house.

4)I did enjoy my thirty days vacation__the Alps.but I was very lonely__my friends whom I had left__home.

5)The dog is hiding__the porch__the house.

6)The train went __the tunnel

7)This plateau is__sea level.

8)The have been gone__Paris__Wednesday.

9)He had to leave the office early__Thursday

10)The small lizard crawled out __the rock.