I know Paul for 5 years.
I have known Paul for 5 years.
John is resembling his older sister.
resembles
I was meeting a lot of interesting people while I was working in Norway.
I met a lot of interesting people while I was working in Norway.
I won't be able to meet you next week. I will stay in London for a few days.
I will be staying in London for a few days.
I work at the university for over ten years now.
I have worked
This large goat is only living in the mountains of Switzerland.
only lives
Take your umbrella. It will rain
It's going to rain.
Who has written the book?
Who wrote the book?
How long are you wearing glasses?
How long have you been wearing glasses?
The rise in demand for timber destroys large areas of rainforest.
is destroying
We've been staying with Paul and Jenny until last weekend.
We were staying with Paul and Jenny until last weekend.
Have you ever been to the opera when you lived in Milan?
Did you ever go...
We have seen Jean in town the other day.
We saw Jean in town the other day.
The new bridge had been opened six months ago.
The new bridge was opened six months ago.
Put your coat on before you'll go out.
Put your coat on before you go out.
I promise I call you as soon as I get home.
I promise I'll call you as soon as I get home.
When I grow up, I'll be an astronaut.
When I grow up, I'm going to be an astronaut.
That's twice I've been forgetting to bring my textbook to school this week.
That's twice I've forgotten...
I call to thank you for the present you sent.
I'm calling