I.
1.Hung/never/go/school/Sunday
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2.Children/ought/spend/free time/play/sports
.......................................................................
3.An/get/good/marks/because/she/work/hard/final exam
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I.
1.Hung never goes to school on Sunday
2.Children ought to spend their free time playing sports
3.An got good marks because she worked hard for the final exam
I.
1.Hung/never/go/school/Sunday
=> Hung never goes to school on Sunday.
2.Children/ought/spend/free time/play/sports
=> Children ought to spend their free time on playing sports.
3.An/get/good/marks/because/she/work/hard/final exam
=> An gets good marks because she works hard for the final exam.