1)They couldn’t use the phone because the SIM card (remove)
2)Scientists say their research (not complete) for another five years at least.
3)I’ve moved into my cousin’s flat because my flat (decorate) at the moment.
4)If we win the quiz again next week, we (win) it ten weeks in anrow.
5)When we arrived at the zoo, the elephants (feed), so we watched.

In our days almost all people use computer. We can say that we can't live without it. For teachers it is the useful thing. They can find a material for a lessons, do presentations, create tests and others works.
But some teachers adhere to the old order and do all by themselves. I don't blame them it is them choice. But I think it's easier to work with electronic assistant. Because there is internet where you can find everything what you need. In simple life in every cabinet there is a computer with exit to internet. Teachers have a personal computer.
In conclusion I want to say that computer and teacher it is normal thing. Computer is a "teacher's assistant" who can always help our teachers.

Смотри, если мало, могу добавить.

1. She  (had not learnt) the material well enough and  (got) a bad mark at the exam.
2. She  ( got) a bad mark at the exam because she (had not learnt) the material well enough.
3. I (had known) Sam for about two years when he (got) married.
4. I (had already known) Sam and Rachel when they (got) married.
5. We (gave) the children their presents and they (opened) the parcels at once.
6. We had (hardly exchanged) our New Year presents when the first guests (arrived).
7. When the first guests (arrived) we  (had already given) the children their presents and they were opening the parcels. They were  eager to see what was inside.
8. I walked in the park for about an hour the other day.
9. I saw a fight when I was walking in the park the other day.
10. I had walked in the park and was going home when I saw a fight.