找出下列句子的错误，并改正。
( ) （1）What does people do in spring?
A B C
改正：_____________
( ) （2）Everyone enjoythesummer.
A B C
改正：____________
( ) （3）Birds sings to welcome the spring.
A B C
改正：_____________
( ) （4）Children goescampingwith their teachers.
A B C
改正：______________
（2）