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 a 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 criminals broke in. a) when b) while 8) We were having a lesson ............... we heard a terrrible 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 11) She met him .............. she was travelling on a train. a) when b) while 12) We saw a falling star ............ we were going fishing in the lake. a) when b) while 13) I saw a nightmare ......... I was sleeping last night. a) when b) while/when 14) .......... I got up this morning, it was raining heavily. a) When b) While 15) Tom burnt his hand .........he was cooking the dinner. a) when b) while

When & While?

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