听力原文:M: That is $ 3.50 on the meter, and a dollar extra for the suitcase.W: OK. Here i
听力原文:M: That is $ 3.50 on the meter, and a dollar extra for the suitcase.
W: OK. Here is five dollars. Keep the change.
How much was the driver's tip?
A.$3.5.
B.$0.5.
C.$1.5.