Unit 246 Rob lost his bike． 羅布丟了自行車

Unit 246 Rob lost his bike． 羅布丟了自行車
    (Something terrible happens. What’s that?)
    Rob lost his bike.
    What an idiot!
    I’m sorry for him.
    You must lock your bike.
    I enjoy biking/bicycling in the country on weekends.
    I’ll bike in the country on the weekend/this weekend.
    I’ll cycle in the country on the weekend/this weekend.
    idiot , imbecile , birdbrain