"Hard" means "diffcult".(对diffcult提问)
hard和diffcult究竟有何区别?
Although math diffcult,but I study hard
diffcult nothing还是nothing diffcult
hard to find,diffcult to leave,impossible to
To do it for him is diffcult对还是 To do it is diffcult for him
a diffcult English problem
make life diffcult造句
make like diffcult造句
That is diffcult?
John thinks Chinese is a diffcult (l ).
quarter表一刻钟时可数吗,例子,diffcult和hard的区别
English is diffcult.Physics is more diffcult改为同义句