1. A)根据旬意及所给首字母提示，补全句中所缺单词。

1. （1） His sister always speaks so fthat we can't hear her clearly．

3. （2） Jack is an estudent and he is good at all the subjects．

5. （3） The question was very difficult，so I couldn't ait．

7. （4） This pair of shoes is too e．I want a cheap one．

9. （5） Ms．Black can speak three l — Chinese，English and Russian．