a) I go to sleep easily when the radio (play) __plays________ .

b) I can tell you whether the machine is good or bad only after I (try) ___have tried________ it .

c) The old lady (fall) __fell_________ as she (get) __was getting________ into the taxi .

d) Before I could say anything, they (admit) ___had admited______ their mistakes .

e) After John (wash) __has washed________ his clothes, he (begin) ___began__________ to study .

f) We (correct) ___corrected_______ our papers after we (take) ___had taken________ the quiz .