In a sport's team, each player has a clear role, and there are few occasions __________ members are confused or uncertain of their roles.
Jack did nothing but ___.
The reason why I didn't come to the meeting was ___ I got ill.
His car broke __ on the way home from work.
Peter often attempts to escape being fined ___ he breaks traffic regulations.
____ he comes to Nanjing he will go to the Eastern Suburb for sightseeing.