根据短文,选择合适的单词填入短文下面的横线中。
swimming near beautiful picture flying are
It’s spring now. The park is very beautiful. Look, the trees are green and the flowers are red. A bird is (1) ______ in the blue sky. Some ducks are (2) ______ in the big lake. There (3) ______ two boys in the small boat. They wear yellow shirts. One girl is painting (4) ______ the lake. What’s in her (5) ______? Oh, it’s a rainbow. How (6) ______ it is!