—How much are the black socks? —__________________.
A. It's 10 yuan. B. It's 10 yuans.
C. They're 10 yuan. D. They're 10 yuans.
How much _______ these socks?
A. is B. am
C. are D. do
You are w ___________.
—Can I h _______you? —Yes, please.
—What c _________is your hat? — Blue.
My _________(毛衣) is red.