阅读下面短文，从所给的12个词或词组中选出10个词或词组，并用其适当的形式填空。 listen to,   ask for,   hear,   think,   learn,   say,   important,   good,   Japan,   language,   how,  what There are more than 6,000 languages in the world. English is one of 1______ languages. It is difficult 2______ how many people are using it. Some English children study French. French is also a very important 3______. Some other children study German, Russian, 4______ and Chinese. Which is the best way to learn a foreign language? We know that we all learn our own language 5______ when we are children. If we learn a second language in the same way, it won't seem so difficult. 6______ does a small child hear his mother's tongue (语言)? He 7______ what people say, and he tries to guess what he hears. When he wants something, he has to 8______ it, and he is using the language, 9______ in it and talking in it all the time. If people use a second language all the time, they 10______ it quickly.