II.Fill in the blank with an appropriate work. Learning a language is, in some way, like (1) __________________ how to fly or play the piano. There (2) _________________ important differences, but there is a very important similarity. It is this: learning how to do such things needs lots (3) ___________ practice. It is never simply to “know” something. You must be able to “do” things with what (4) ___________ know. For example, it is not enough simply to read a book on (5) ______________ to fly an aeroplane. A (6) ___________ can give you lots of information about how to fly, but if only read a book and then try to (7) _____________ without a great deal of practice first, you will crash and kill (8) ____________ . The same is true of (9) ______________ the piano. So you think it is enough simply to read about it? Can you play the piano without having lots of (10) _________________ first?