Supply the correct PAST TENSE (SIMPLE OR CONTINUOUS FORM) of the verbs in parentheses:
a) I __________ (go) to the movies last night.
b) While I __________ (go) to the movie, I met Mary.
c) When my mother _____________________ us for dinner we ________________________
the video game. (to call) ( to play).
d) Charles and Bill ________________________ at the club when it _______________ to rain. (to swim) (to start).