It has been sent by them to a laboratory.
It was being examined by scientists all through the night.
It has been discovered that it is the skeleton of a dinosaur from thousands of years ago.
Tests are still being done by them.
It is going to be sent to a museum when the tests have been completed by them.
1 I didn't like school when I was young (use)
I didn’t use to like school when I was young.
2 He moved to Lisbon two years ago. (living)
He has been living in Lisbon for two years.
3 This is my first time on a steamboat! (never)
I have never been on a steamboat before.
4 Having such amazing friends makes me feel lucky (have)
l feel lucky to have such amazing friends.
5 The last time I saw Sarah was Friday. (have)
I haven’t seen Sarah since Friday.