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.
相关试题
—What's this in English?—______．
A．This is a carrot B．It's a apple C．It's an orange
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