9．听第14段材料，回答第15至17 题：
15．What's the boy's first problem？
A．He forgets a lot of new words．
B．He doesn't get much writing practice．
C．He can't get the pronunciation right．
16．What's the girl's advice？
A．Watch English-language TV．
B．Join an English-language club．
C．Ask the teacher for help．
17．What can help the boy a lot to understand the teacher？
A．Listening to more tapes．
B．Study by working with a group．
C．Practicing conversations with friends．
