1) when did you catch that cold? ( skate on a frosty day) 2) when did he write those nice poems? ( have a holiday) 3) when did she learn the language? (live in england) 4)when did she hear that song? (listen to a concert on the radio) 5) when did you buy that book? ( read up for my exams) 6) when did the boy hurt himself? ( ride the bicycle) 7) when did philip lose his camera? (walk about the city) 8) when did he ring you up? ( have supper)