1. I took his book from him when he was not paying attention.2. Love comes when you least expect it.3. The Bible says that God's kingdom will manifest itself on Earth when we least expect it.
 when somebody least expects it when somebody is not paying attention
老師 (讓小朋友出校車後): 別嬉戲，別跟陌生人說話。 (請填空)
Teacher (after letting kids out of the school bus on a field trip): No horsepay. Don't talk to strangers.