按中文完成英语句子。狗在河里游泳.dog It's( )the( )。鸭子从家用的垃圾桶里探出半个身子.bird It's( )the( )。猫从门背后探出脑袋。cat It�

【专家解说】：dog. It's swimming in the river. bird. It's rising half of its body from the litter bin. cat. It's showing its head behind the door. rabbit. It's looking at the mirror. monkey : It's reading a book under the coconut tree.