1. I did my homework at 8 o'clock last night
2. Your health would get bad if you worked too hard
3. One of the most difficult decisions is to choose a job for a living
4. You can save energy by turning off lights and using public transport
5. Should we delay the party because nobody can come that day
6. There was a terrible thunderstorm yesterday evening
7. Humans need a constant supply of water to live
8. The storm suddenly hit and destroyed the whole village
9. They bought a house near the beach last summer
10. Were the children studying at school at this time yesterday