阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式。

    In order to know a foreign language thoroughly, four things are necessary. Firstly, we must understand the language when we hear ____ spoken.. Secondly, we must be able to speak it correctly with confidence and without hesitation. ____ ,we must be able to read the language , and fourthly, we must be able to write it. We must be able to make sentences that are grammatically correct.

    There is no easy way to success ____ language learning. ____ good memory is of great help, but it is not enough only ____(memorize) rules from a grammar book. It is not much use learning by heart long list of words and ____meanings , studying the dictionary and so on. We must learn by using the language. ____we are satisfied with only a few rules we have memorized, we are not really learning the language. “Learn through use” is a good piece of ____(advise) for those ____are studying a new language. Practice is important. We must practise speaking and ____(write) the language whenever we can.