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  _____________meaning, 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 practice speaking and ________(write) the language whenever we can.