S1. According to the passage, a worker primarily works for_______________________.

A．They were expensive.
B．No one believed them.
C．They were unsuccessful.
D．They were often deceptive.

A．They missed the concert because of the rain.
B．They are soaked in the rain on their way to the concert.
C．They will dry off their clothes immediately before the concert starts.
D．They will change their clothes a few minutes before the performance starts.