While my father was reading a book , my mother ________ him., calling, called, I ________ a shower when my friend broke my mother's cup., was having, had, When the teacher ________ into the classroom ,some students were running around., came, was coming, I arrived home while all the guests ________ tea and biscuits., had, were having, While Sue was waiting for the 12 o'clock train , she ________ an old friend., was meeting, met, What ______ when the teacher looked at you suddenly?, were you doing, did you do, When the train left , Thomas __________ to the station., was rushing, rushed, The electricity ________ while we were watching a horror film., was going off, went off, Mr.Robinson fell off the tree while he ________ at the little bird's nest., looked, was looking, I ________ homework when my mother knocked at the door., was doing, did.

When - While

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