I think nothing to mobile phone language is set to English i

I think take mobile phone to school is useful这个句子有错吗? I think English is a ( ) language.(use) I think I d() my mobile phone during the concert 选择填空 How I wish I __ to repair the mobile phone!I only madi To learn a foreign language well is useful ,I think.I think_ W:oh!I think my sell phone is about to die!M:Dont worry ,I c I think English is difficult to——— I think English is easy to learn同义句 I think English is very easy to learn . 选择填空：I think the mobile phone ___is very interesting. But first I need to buy the new mobile phone I saw advertize I'm 【】for a mobile phone.I don't know which one to buy