Réponse:
A) negative: I wasn't having a bath
quastion: was I having a bath?
affirmative: I was sleeping
negative: I wasn't sleeping
affirmative: she was studying
question: was she studying?
negative: we weren't watching T.V
question: were we watching T.V?
affirmative : he was reading a book
negative: he wasn't reading a book
affirmative: they were playing
question: were they playing?
negative: it wasn't raining
question: was it raining?
B) 1- did
2- did
3- nothing (-)
4- was; did
5- were
6- nothing (-); was
C) 1- come
2- talking; saw
3- listening; thinking
4- work; did
5- playing; lost
6- waiting; arrived
D) were walking, saw, took off, jumped, didn't want him, was trying, didn't hear, got, saw, were running, stopped, caught, took, didn't understand, was happening, found out, was waiting, were.
