Are they ______books? –No, they aren’t. They’re ______ books.

Mr. Smith works with a mobile phone company, but he _____________ for this international meeting, since he is on holiday.

Why ______ come a little earlier ?—All right. [ ]

A desk is made_____ wood, and paper is made _____ wood, too. [ ]

Li Jun will have a math test tomorrow. As he isn’t good at math, he is ______.