Fill in the gaps with the past continuous of the verbs in brackets. a) the teacher (not talk) when mary arrived. b) the pupils ) when the bell rang. c) lucy (do) her homework when someone knocked the door. d) mark´s parents ) him a letter when they heard a crash. e) ann (not sleep) when the alarm clock rang. f) they watch) tv when their parents arrived.

A) The teacher wasn't talking (not talk) when Mary arrived.
b) The pupils were playing (play) when the bell rang.
c) Lucy was doing (do) her homework when someone knocked the door.
d) Mark´s parents were writing (write) him a letter when they heard a crash.
e) Ann wasn't sleeping (not sleep) when the alarm clock rang.
f) They weren't watching (not watch) TV when their parents arrived.