3．听下面一段材料，回答第15至第17题．
15．Why is John so excited？
A．Because he will go for a trip next Friday．
B．Because he will go to dinner with his friends next week．
C．Because he will go to see his parents next week．
16．Where is John going next week？
A．Hong Kong．
B．The USA．
C．England．
17．When is John going to leave？
A．On June 29．
B．On July 29．
C．On July 19．
