1. Finish your homework. Then you can go out. You cannot go out ………………………
You cannot go out until you finish your homework.
Finish your homework. Then you can go out. You can go out …………………………
You can go out as soon as you finish your homework
3. He said goodbye to his children. Then he left. He said goodbye ……………………………………….
He said goodbye before he left.
We arrived late. Most of our friends had left. Most of our friends ………………………………..
Most of our friends had left by the time we arrived.
6. Maria was cooking dinner. We watched television. We watched television …………………………………..
We watched television while she was cooking dinner.
Iphones used to cost 30000. I can remember that. I can remember …………………………………….
I can remember when iphones used to cost 30000
People made a lot of important discoveries in the 20th centure. There were many important discoveries............................
There were many important discoveries during the 20th century.
I didn’t have my keys, so I couldn’t get in ………. Peter arrived.
until
You can’t legally drive a car ………… you’re 18.
until
Tom needs his CD-player next weekend, so I’ll give it back to him ………. Friday.
by
We went on walking ……………. the night had fallen.
until
If we don’t pay all the bills we owe to the electricity board ………. the end of this month, our power supply will be cut off.
by
She almost fell asleep ..... the conference
during
I found some old magazines ........ I was tidying my room
while
He called the police ...... he found out he had been robbed
when/as soon as
