1) While my father was reading a book , my mother ________ him. a) calling b) called 2) I ________ a shower when my friend broke my mother's cup. a) was having b) had 3) When the teacher ________ into the classroom ,some students were running around. a) came b) was coming 4) I arrived home while all the guests ________ tea and biscuits. a) had b) were having 5) While Sue was waiting for the 12 o'clock train , she ________ an old friend. a) was meeting b) met 6) What ______ when the teacher looked at you suddenly? a) were you doing b) did you do 7) When the train left , Thomas __________ to the station. a) was rushing b) rushed 8) The electricity ________ while we were watching a horror film. a) was going off b) went off 9) Mr.Robinson fell off the tree while he ________ at the little bird's nest. a) looked b) was looking 10) I ________ homework when my mother knocked at the door. a) was doing b) did

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