26. --What ________ useful book!

--Yes. And it is also _______ unusual book to us.

   A. a; a        B. a; an        C. an; an         D. an; the

27. Some ______ and ______ will come to visit our school next month.

A. Germans; Englishmans               B. Germen; Englishmen   

C. Germans; Englishmen                D. Germen; Englishman

28. It’s snowing outside. ______ your coat, please!

A. Put up         B. Dress up          C. Put on         D. Take off