Complete the passage with suitable words from the word bank. You may not use any of the words more than once.crazyexplorecreativevisiblecontradictescapedacquiredinvisiblelearningdaydreamingEnglish is the most widely used language in the world. But it is also a(n) 1) _________ language and never easy to learn. For one thing, English has 2) ___________ the largest vocabulary of all the world’s languages.Language is like the air we breathe. It is 3) ____________ and we often take it for granted. But a close examination of the English language has led to some interesting findings about its crazy usages. For example, people drive in a parkway and park in a driveway. If we 4) __________ its paradoxes, we find that nightmare can take place in daylight while 5) ____________ can take place at night; quicksand works slowly, and boxing rings are square. The list can go on and on.In fact, all languages are a little crazy in one way or another. Walt Whitman might say that languages 6) ____________ themselves because language is the 7) __________ invention of human beings.