Make up sentences. Write them down. The first one is done for you.
1 have/many/scientists/things/explored/sinse/began/the space era
2 since/hasn't/it/stopped/yesterday/raining
3 lots of research/on outer space orbital stations/done/have/people
4 spaceship/how/the/outside/long/you/have/spent
5 for/windy/three/and/it/has/been/stormy/days

1. Scientists have explored many things since the space era began.2. It hasn't stopped raining since yesterday.3. People have done lots of research on outer space orbital stations.4. How long have you spent outside the spaceship?5. It has been stormy and windy for three days.