It’s the ____ in the country to go out and pick flowers on the first day of spring.

       A. use                   B. habit                 C. custom              D. normal

It’s the ____ in the country to go out and pick flowers on the first day of spring.

　 A. use　　　 B. habit　　　　 C. custom　　 D. normal

It's the ______ in the country to go out and pick flowers on the first day of spring.

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