Giúp làm bài tập tiếng Anh, nếu có thể giải thích dùm mình

VI. Use these sets of suggested words to write a story (2ps )
1. Last month class 9A /have / terrible experience.
2. They /decide/ go / picnic / Cuc Phuong National park
3. Soon after/ arrive/ park/ start to rain
4. They / have to wait/ two hours/ bus/ before/ rain/stop
5. They/ get out of/ bus/ lunch
6. After lunch/ they/ begin to explore/ park/ groups of 4 students
7. Unluckily/ it/ begin/ rain heavily / again
8. Everybody/ get wet/ decide/ leave/ park/ without/ watching anything.