1. 根据短文内容填空，补全句子。

    I'm Bob. I have two little sisters. They're Lily and Lucy. Children's Day is coming. I want to buy some gifts for them. Lily wants a new dress, because her dress is too small. Lucy wants a new doll, because her doll is too old. The dress is sixty yuan, and the doll is forty-five yuan. I'm going to buy them. They must be happy.

1. （1） Bob has two  sisters.
3. （2） Lily's dress is too .
5. （3） Lucy's  is too old.
7. （4） Bob is going to  the dress and the doll.
9. （5） Lily and Lucy must be .