There are three tables in the classroom.（改为单数形式）

There are three tables in the classroom.（改为单数形式） There are nineteen chairs in the classroom.(改为单数) there are three bikes near the tree改为单数形式 There are two end tables in the room怎么改成单数形式 there are 2 tables in the classroom.什么意思 There are many children in the park.改为单数形式 are there any eggs in the box?改为单数形式 There are lots of nice watches in the shop.(改为单数形式）：（ ）in th there are three people in her house 怎样改为单数形式? There are some old men in the classroom改为单数句 there are lots of taxis in the street.（改为单数形式） there are two end tables near the bed 改为单数句.