A)用括号中所给单词的适当形式填空。
I have a brother and a sister. So my parents have three ____________ (child).
—Let's go to Wolong to see ___________（panda）．
Paul practices ______________ (play)the piano on weekends.
Jack’s father and mother are _____________ (music).
Molly is only three years old，but she can ______（read）many words.
B) 根据句意及所给汉语意思写出所缺单词。
My brother is _____________(学习)for his test.
It's ________________(重要的)for us to exercise.
We walk with our____________  (腿)
Don't _____________ (打架) with your classmates.
We have to be ____________ (安静)in the library.