I think math is

I
think
math
is
（really
difficult
）.
答案：B
翻译:我认为数学真的很难。
注：real
是形容词，difficult也是形容词，修饰形容词应该用副词“really”，所以是really
difficult。

你好！
B
真的很难
really
修饰形容词
如果对你有帮助，望采纳。

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