Because making sentences is easy in the first grade.

Our sports meeting was postponed because of the recent heavy rain.

2. Because of the rain, the pitted playground is full of water.

3. Because the sun is scorching the earth at this time, people have to find a shady place to live.

4. Xiao Ming felt very uneasy because he didn't finish the task on time.

5. Because of the cold weather, the volume of that object has shrunk a lot.

6. The flight was postponed because of the bad weather.

7, because of lack of nutrition, his body is very thin.

8. They killed her because she knew too much.

9. I am very nervous because I am using a lot of expensive equipment.

1. Xiaolan's grades plummeted because she didn't study hard.

11. Because my sister kept practicing dancing every day, she got the first place.

12. Because it snowed heavily today, all the students were late for class.

13. He was late because of a traffic accident on his way to school.

Xiaoming got wet because he didn't bring an umbrella.

15. Because time is short, it can only be done like this. If there is enough time, it will definitely be much better than this.

16, this exam, because there is no time to review systematically, I have to take the challenge in a hurry.

17. Because it rained, the pitted playground was full of water.

18. Because he made a mistake, he has butterflies in his stomach.