1) I was reading a book .......... suddenly I heard a noise. a) when b) while 2) ........... Rose was cooking dinner, her husband went to work a) when b) while 3) ......... Sandra and Kathy were talking in the living-room, the doorbell rang. a) when b) while 4) Ben was playing in a basketball team .......... he was kid. a) when b) while 5) Sharon came home ......... her brother was playing video games. a) when b) while 6) ......... Angela got home, she was making some coffee. a) when b) while 7) They were sleeping .......... the burglars broke in. a) when b) while 8) The students were having a test ......... they heard a terrible noise. a) when b) while 9) ....... I was cycling, the rain started. a) when b) while 10) He broke his arm ........ he was playing basketball. a) when b) while

when and while

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