题目内容：

Many people, especially students, have trouble in learning a foreign language. Many experts give their advice on it.

In order to know a foreign language, four things are____. First, we must understand the language when we hear it. Second, we should speak it correctly, with confidence. Third, we must read the language and write it. In addition, we must make sentences that are grammatically correct. We must know____ to arrange sentences in paragraphs, in order to write a good article. There is no easy way to succeed in language learning. A good memory is of great help, ___ it is not enough to simply memorize rules from a grammar book. It is not very helpful to only____ long lists of words and their meanings by heart. We learn words not by ourselves, but by using the language. “Learn through use” is a good piece of advice for those who are studying a new language. Practice is the best ____. We must practice speaking and writing the language whenever we can.

1.A. necessary B. possible C. interesting D. boring

2.A. why B. when C. how D. where

3.A. and B. so C. but D. or

4.A. carry B. realize C. forget D. learn

5.A. ability B. skill C. suggestion D. way