I can do nothing for you , I am not good at math 谁知道这是什么意思了

I can do nothing for you , I am not good at math 谁知道这是什么意思了 i am not good at math.ireally do not donw ___ a.what should I am good at nothing Good morning!What can I do for you?I am looking for a pair o I am the nothing that matters you can not think Good morning!What can I do {}you?I am looking for a pair of I study hard,but I am still not good at math(改为同义句） I am not good at english @Could you translate it for me?hah. I am not good at expression中文是什么意思 miss,I am lawyer.What can I do for you? Am I to you is not good enough for 1.------what do you r__ ------I am good at it