this case is quite (common)today with the great development of science and technology怎么选common ? 什么意思?这个“一般”和general alike有什么不一样? 请高手简单讲讲.3Q

This is his pencil case. W_______pencil case is this.并翻译 Is this your pencil case中文 this is his pencil case 复数句 whose is this red case意思是什么? This pencil-case is five and ten. this is not necessarily the case this is no longer the case是什么意思 This channel is quite（ ）（bored）. is this your case,is this case yous这两种语法有没有错误 This being the case,如句子：This being the case,china is one of developping countries. This is ( )eraser. ( )eraser is in the pencil case . this case is quite (common)today with the great development of science and technology怎么选common ? 什么意思?这个“一般”和general alike有什么不一样? 请高手简单讲讲.3Q Exuse me!Is this your pencil case?改为复数形式 This is my pencil case改为复数形式 is this a pen ___ your pencil case This is a pencil case.(改为复数句子） 将this is a pencil case变为一般疑问句