It’s ________pleasure for me to be invited to play the piano at the concert.

Have you heard of ______ news? The price of ______petrol(汽油)is rising again.

Have you ever seen        China pavilion (展馆)?      traditional one indeed.

— How long did you stay at the party?— I only stayed there for ________ hour.

- What do you want to be when you grow up?-I want to be_______ social worker. Many people are in great need of our help.