找出下面单词中意思不同类的一个，把它的序号写到前面的括号里。(6分)
1. A. weekend        B. Monday         C. Friday   
2. A. English        B. Chinese        C. have
3. A. young          B. old          C. shy
4. A. Mr            B. White         C. Ms
5. A. TV             B. watch         C. read
6. A. am             B. is            C. eat