— I’m afraid I can’t finish the book this week.

    — ____. 

    A. Please go ahead                 B. That’s right

    C. Not at all               D. Take your time

I'm afraid this painting is not by Picasso. It's only a copy and so it's _____.

A.priceless                 B.invaluable                   C.unworthy      D. worthless

I'm afraid this painting is not by Picasso. It's only a copy and so it's _____.

   A. priceless    B. invaluable    C. unworthy    D. worthless

I'm afraid this painting is not by Picasso. It's only a copy and so it's _____.

        A.priceless                 B.invaluable                   C.unworthy                 D. worthless

—I’m afraid I can’t memorize so many new words in 2 days．

—_______．

 A．Don’t be afraid      B．You are clever       C．Not at all       D．Take your time