Bob isn't good at math,but he tries ____________ hard求解此空是填working还是to work.

Bob isn't good at math,but he tries ____________ hard求解此空是填working还是to work. My sister isn`t good at maths Tom isn't good at 翻译一下下,哈哈 改错：His mother isn't good at sing English songs. She isn't good at English …改同义句.She isn't good at English .Her brother isn't good at English ,neither.（改同义句）She isn't good at English ,___ ___ her brother . bill isn't good at english （同义句改写） he isn't good at maths 改为同义句 同意句:He isn't good at English He isn't good at math.改为同义句 -Is your father good at()?-No he isn't. Mike isn't good at Chinese.(改为否定句) Isn't he good at math?怎么回答? isn't good at English.的所有句型 isn't just good My sister is good at ___(sing),but she isn't good at ___(dance) Look at the phto of ___.Isn't she athletic?___Sam's athletic,he isn't good at playing basketball Martin is good at fishing,____?填空应该是：isn't he,还是doesn't he? ---Tom isn’t having a good time at the moment.---- N_______ am I.---Tom isn’t having a good time at the moment.---- N_______ am I.