试题题干
Fill in the blanks with the words given in brackets. Make changes or add something where necessary.
If the balloon is filled with a gas called hydrogen, it will become
(large) with more hydrogen compressed into it.
参考答案
试题解析
本题考查形容词的比较级。从more hydrogen可知，前面应该是变得更大。
句意：如果气球充满了一种叫做氢气的气体，它会变得更大，更多的氢被压缩进去。