By the time of last year, she ______ the piano for five years.

下列交际用语使用得体的一项是( )

Suffering from a mysterious disease for long, the patient was advised to walk along the seaside in the sun to 　　　　his health.

_______ along the road, Mr Smith met an oldfriend of his

Help others whenever you can _______ youwill make the world a nicer place to live in