用括号内所给单词的适当形式填空，每空格限填一词。

小题1:There are many fresh ___________ (potato) in the supermarket.

小题2:Their apartment is on the ___________ (seven) floor of the building.

小题3:The university student came back to his hometown and became a new ___________

(village).

小题4:___________ (lucky), Fred was not hurt in the car accident.

小题5:Miss Zhou is very popular in our school. She is a ___________ (success) teacher.

脚手架安装与拆除作业区域应设（），搭拆作业应设专人安全监护，无关人员不得入内。

A.安全网

B.围栏

C.安全标示牌

D.围栏和安全标示牌