1) I was riding a bike ......... I saw my friend. a) while b) when 2) Dad came home ......... mum was reading a book. a) while b) when 3) He was working on his laptop ......... it crashed. a) while b) when 4) We were walking home ......... it started to rain.  a) while b) when 5) I fell asleep ......... I was doing my homework.  a) while b) when 6) He met his friend ......... he was walking in the park. a) while b) when 7) She was making dinner ......... the bell rang. a) while b) when 8) Rita's friend phoned ......... she was having a coffee. a) while b) when 9) We broke our rackets ......... we were playing badminton. a) while b) when 10) I was swimming in the sea ......... I saw a shark! a) while b) when

Past Simple vs. Past Continuous (when/while)

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