очень нужно! Вставить предлоги вместо точек
1.I don't think John will find a good job after dropping out college.
2.When you come of age, you become responsible everything that you do.
3.Betty isn't coming to the party, she is spending all her time studying the final exam these days.
4.He couldn't enter the university, but he moved on a different direction and spent a year working as a volunteer in France.
5.When I got my English test result, I gave up any hope studying abroad.
6.You're a great swimmer, we pin our hopes ... you in this competition.
7. If I graduate from high school honours, my parents will be on cloud nine.

The wife of a rich man fell sick: and when she felt that her end drew nigh, she called her only daughter to her bedside, and said, "Always be a good girl, and I will look down from heaven and watch over you." Soon afterwards she shut her eyes and died, and was buried in the garden; and the little girl went every day to her grave and wept, and was always good and kind to all about her. And the snow spread a beautiful white covering over the grave; but by the time the sun had melted it away again, her father had married another wife. This new wife had two daughters of her own: they were fair in face but foul at heart, and it was now a sorry time for the poor little girl. "What does the good-for-nothing thing want in the parlor?" said they; and they took away her fine clothes, and gave her an old frock to put on, and laughed at her and turned her into the kitchen.

I was cleaning the house while he was working in the garden. (Оба действия продолжали на протяжение некоторого времени).
When we found the cat it was playing under the bed. (Found — короткое действие, нашли. Was playing — он играл на протяжении некоторого времени).
Joan was having a shower when the window cleaner came. (Аналогично, как во втором)
Grandma was knitting while Grandad was smoking his pipe. (Скорее всего здесь опечатка и должно быть именно так.)
When i arrived home, Father was painting the front door.
Bob and Sally were walking when it started to rain.
What were you talking about when i came in?
I was reading my newspaper when they knocked on the door.
As Fiona was washing the glass, she cut her finger.
Mother broke the vase while she was dusting it