试题题干
Fill in the blanks with the words given in brackets. Make changes or add something where necessary.
The world population is
(explode) at an incredible rate. We should do something to help reduce it.
参考答案
试题解析
由题干可知第一句话表示的是现在正在发生的事情，所以应当用现在进行时态exploding。句意：世界人口正以惊人的速度增长。我们应该做些事情减缓这种情况。