这个怎么读? this is

This is Mary.He is English.这个病句怎么改 this is it 怎么读? 帮我看看This is怎么读 Whose coat is this 怎么读? Who is this man 怎么读 This dog is lost 怎么读 Is this怎么造句 this computer is being attacked? 这个病毒怎么清除啊 怎么电脑老中这个病毒啊 this is exactly what happed in Shanghai 这个话语法怎么解释,exactly是修饰 Which is _____(tall),this one or that one?这个怎么填 AS BOOK IS INTERESTING THIS AS ONE THA 这个怎么排? This is my friends 这个句子怎么改成否定句和疑问句（要有回答）?