Lucy dances very _________.

Mr. Black, I find ______ difficult to play the piano well.—Oh, I think you just need to practice more

Have you seen _____ empty box?— Do you mean _____ box you showed to me yesterday? I put it in your schoolbag.

When will the party begin?—When all the people invited .

Shelly is good at English,so she is never _____speaking to foreigners.