-If you have time tonight，I’d like to invite you to a ball.　-That’s very nice of you，but are you ____?

— What can I do for you?— This dress is too small. Is it _____________ in a larger size?

I think you should go back to your ______ plan, which is much more practical than the present one.

My most __________ moment was trying to introduce a woman whose name I couldn’t remember.

While the government says there is a(n) ________supply of houses，prices of apartments have been going up these years.