1. i am not rich, so can't be a volunteerer
2. the weather is cold, so we stay at home
3. i don't study hard, so i get bad marks
4. mai doesn't help me, so i can't finish my work
5. my mother isn't there, so the can't help me
6. i am tired, so i have to stay at home
7. i have do exerciser, so i don't go out with you
8. i don't have free time, so i can't play soccer
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CẢM ƠN TRƯỚC!