Complex sentence: Chan attended the school's centenary celebrations at Shangri-La Hotel in 1985 and was honoured by the Singapore Scouts Association in 2000-he was the only person to have attended the very first and last Scouts' Jamboree in the 20th century.
Split into simpler sentences: Chan attended the school's centenary celebrations at Shangri-La Hotel in 1985 and was honoured by the Singapore Scouts Association in 2000. He was the only person to have attended the very first and last Scouts' Jamboree in the 20th century.