the biggest problem （）learning English +for还是of此时这里应用for 还是of 是什么意思 为什么?那扩展开来 什么时候用for什么时候用of?用法是什么 希望详细点哦

the biggest problem in the world and why? Maybe one of the biggest problem in China is p______ 用英语回答：What is the biggest problem China faces Mike is now f-----the biggest problem in his life. A biggest problem the problem is not your face the biggest problem is your the biggest what is your biggest problem when learning English,and what solution do you suggest to the problem 翻译Sleeping through the alarm seems to be your biggest problem. One of the biggest Transportation problem are cars and buses’ pollution.有没有语法错误 翻译sometimes the biggest problem you haveat work is you own stress 求一篇用英文回答的What's the biggest problem in China? 检查语法问题the biggest problem is neither money nor language barriers,but psychological problems the biggest () in the world may be the pollution 括号内填Apuzzle B problem C matter为什么 求 My biggest problem翻译 加原文~ 关于英语形容词最高级的疑惑因为最高级不是用the的吗?为何My biggest problem 没有the He tries to work out this problem,but he can’t.同义句转换!改成He (一空)to work the problem out.还有一句!The biggest shop is nearby.改成The biggest shop is(三空) what is the biggest problem a teenager has?a teenager has前边为什么没有关系词?what is the biggest problem a teenager has?a teenager has前边为什么没有关系词?