题目内容：

 

1.You are not allowed to camp here without ________（允许，许可）.

2.Nowadays people use ______ (信封) less and less because they turn to other forms of communication rather than write letters.

3.To be frank, we all have our strengths as well as ______ (弱点).

4.It is the ________（风俗）for westerners to celebrate Christmas.

5.It was getting darker and darker, we waited anxiously for the ________（到达）of the next bus.

6.I know you don’t like her but try not to make it so _________（明显的）.

7.We asked the stranger the question out of ______(好奇).

8.My sister, an inexperienced rider, was found sitting on the bicycle trying to ________（平衡） it.

9.He is not a wealthy person; on the ________（相反），he has been in heavy debt..

10.Thank you for ______（提醒） me about my appointment..