____ difficult the task may be, we will try our best to complete it in time.

the climate, I would stay here much longer

To be a great ______ like Lang Lang，my cousin practices playing the piano every day.

u have been on tour for a week in ourcity during May Day. What do you think about it—Oh, what _______different Nanjing! Itisn’t _______I saw last.

When people visit the USA, they can see_______.