Đáp án:
Although the weather was getting better , my father decided to cancel the picnic.
`→` In spite of the fact that the weather was getting better, my father decided to cancel the picnic.
Áp dụng công thức chuyển từ although → In spite of:
Althought/Though/Even though + Mệnh đề
→ Despite/In spite of the fact that + Mệnh đề