把there were some umbrellas in the classroom改成单数句

把there were some umbrellas in the classroom改成单数句 There are some flowers in the kitchen.(改成单数句) 把句子改成单数形式1.There are some foxes in the zoo.（单数句）2.These stra there are some umbrellas behind the door.(改为单数形式) There were some old diaries.(改成单数句） There are some old men in the classroom改为单数句 There were some students in the classroom(改为否定句） There are some pictures in our classroom.改成否定句 There are some umbrellas behind the door(复数句 There were some birds in the tree this morning.（改成否定句） There were some birds in the tree.改成一般疑问句 there are many students in the classroom 改成复数句