Помогите пожалуйста сделать задание. Use your own ideas to complete the sentences. (Используй свои идеи, чтобы дополнить предложения, дополнять нужно где точки.)

1....for several years.
2....since yesterday.
3. When I was a child....
4.It"s three weeks since....
5. ..ten minutes ago.
6. For the past three weeks....
7....in 2001.

I have been working as a librarian for several years.
I ate nothing except one small sandwich with a cup of tea since yesterday.
When I was a child I liked walking around the Green Field.
It`s three weeks since I came back my home.
My sister phoned me ten minutes ago and asked my how I was.
For the past three weeks Mary`s mood has been changing considerably.
This equipment was invented in 2001.