( )1. A.am ( )2. A.a ( )3. A.small ( )4. A. is ( )5. A.have ( )6. A.class ( )7. A.at ( )8. A.building ( )9. A.He ( )10.A.thin | B.is B.an B.big B.isn't B.has B.classs B.in B.Building B.he B.slim | C.are C.the C.beautiful C.aren't C.there's C.classes C.between C.the building C.She C.happy | D.be D./ D.pretty D. are D.there're D.class's D. on D.the Building D. she D.sad |