6、There is a sign _________ the grass.
5、Keep ________ the grass.
4、You must stay ________from the building.
3、Can I go_________?
2、He is asking Ben some questions _________ the public signs.
a lot of make about should off quiet in shouldn’t always a lot on away
1、Jack ________has ________ questions.
13.keep off 14. keep quiet
11. at Jinling Zoo 12. take a walk
9.公共标记 10. 吵闹
7.在墙上 8. 散步