题目内容
9．The population of the world still now．（ ）| A． | will； grow | B． | has； grown | C． | is； growing | D． | is； grown |
分析 世界人口现在仍旧在增长．
解答 答案：C 根据时间副词now表示"现在"可知，此句用现在进行时态；现在进行时态表示现在正在进行动作，其构成形式是助动词"be+动词-ing"．主语The population of the world是名词单数，时态助动词用is，故选C．
点评 判断动词的时态，要通过所给的时间状语去判断动词存在的状态．
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