in ,the,bog,there,desk,book,on,a,the,is连词成句

is book a the in there bog the desk,on连词成句 in ,the,bog,there,desk,book,on,a,the,is连词成句 is flower there on desk the a连词成句 is computer there on desk the a .连词成句 There is a book on the desk.(改为否定句) there is a book on the desk改为复数句 is there a book on the desk? 连词成句：there,a,book,and,pens,two,are,desk,the,on(.) book.i.a.the.on.desk.found 连词成句 Is there a book in the desk? there,hammer,on,is,the,a,desk怎么连词成句 There is a book that is on the desk