（1）What did Bob do last weekend？
A.He went to the movies.
B.He studied at home.
C.He cleaned his house.
（2）What does Bob want to be in the future？
A.A scientist.
B.An engineer.
C.A school teacher.
（3）Why does Bob want to save the earth？
A.The animals are in danger.
B.There are more cars.
C.The environment is worse.
（4）How was the weather in the city last year？
A.It was great.
B.It was not bad.
C.It was terrible.
（5）How are they going to save the environment？
A.To plant more trees.
B.To ride bikes.
C.To save water.