Oxford Dictionary definition: Monkey business
/ˈmʌŋki bɪznəs/ [uncountable] (informal) dishonest or silly behaviour.
There's been some monkey business here:
Listen to this (mostly!) true story.
1. How does the monkey travel?
2. What does his owner say to the police?
Reading Worksheet * CEF language level: B1/2 First published in Ming Pao Daily. Illustration by Iris Tso