阅读短文，选择正确的答案。
Today is Sunday. The students of Grade One go to school early, but they have no classes. Their teachers take them to the zoo by bus. They get there at half past nine.
How beautiful the zoo is! There are many trees, some hills, and a big lake. It’s spring now, and the flowers are coming out. There are many people there, too. They like to watch monkeys. They are having a good time there. They leave the zoo at three in the afternoon.
(     ) （1） The students get to the zoo            .
A. in the morning      B. in the afternoon     C. in the evening  
(     ) （2） The students have lunch            .
A. at home           B. in the zoo          C. on the bus     
(     ) （3） They have no classes because            .
A. they want to see flowers                  B. it’s Sunday today
C.They don’t want to have classes.  
(     ) （4） They stay in the zoo for            hours.
A. three              B. five               C. five and a half
(     ) （5） Which is right?
A. The students go to the zoo in January.
B. They go to the zoo by bus. 
C. They play with monkeys in the zoo.