小题1:If visitors cannot see the animals, the animals may be______.
A．playing
B．eating
C．acting
D．sleeping小题2:Jack is eight years old. He goes to the zoo with his 58-year-old grandfather．How much should they pay for visiting the zoo?
A．$18.
B．$22.
C．$28.
D．$32.小题3:What should we do in order not to frighten the animals?
A．We should ride bikes.
B．We should keep quiet.
C．Ｗe should feed the animals.
D．We should keep the zoo clean.
