根据首字母和汉语提示，完成句中单词。

1．You must pay attention to your p_________ when you talk to foreigners．

2．The sweater is too e _________．Could you show me a cheaper one?

3．He is careless and has made some _________ （错误）in the test．

4．Don’t take anything away without  _________ （允许）．

5．Our teacher tire very  _________（感动）．

6．They are talking about the learning _________（挑战）．

7．It can also _________（影响）the way we behave with our families．