Mr Black seemed ____ quite happy. A. is B.be C.was D. to be 答案:D选出下列各组中不同类的单词 (________) 1. A. day B. Friday C. Monday(________) 2. A. Miss B. music C. Mr (________) 3. A. fat B. bag C. big(________) 4. A. A.tomato B.pork C. potato (________) 5. A. smart B. strict C.salty