1. A)根据句意及所给首字母提示，写出句中所缺单词。

1. （1） It's a good i to go to the old people's home after school．

3. （2） There are over 200 countries in the w．

5. （3） Come on．Blow out these con your birthday cake．

7. （4） No one knows the a to the question．It's so difficult

9. （5） The weather in Australia is quiet d from that in China.