用is和are 填空。
(1)There________a boy at the Great Wall.
(2)There _______three books under the apple.
(3)There________a cat in the box.
(4)There_______some ducks in the boat.
(5)There_______some clothes on the line.
用is和are 填空。
(1)There________a boy at the Great Wall.
(2)There _______three books under the apple.
(3)There________a cat in the box.
(4)There_______some ducks in the boat.
(5)There_______some clothes on the line.