题目

阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。Mandarin Chinese（普通话）is the mother tongue of over 873 million people, making it the most 【1】 (wide) spoken first language in the world. Each year more and more students around the world 【2】 mother tongue is not Mandarin are studying it with enthusiasm. Let’s take Russia 【3】 example.The number of Mandarin learners in Russia 【4】 (grow) hugely from 17,000 to 56,000 in the past 10 years, For the first time in 2019, over 【5】 (hundred) of middle school students in Russia will下列各数中，是负数的是 (       ) A.    B.     C. | -9 |     D.