根据句子的描述选择最佳答案，并将所选单词的字母填写在括号内。
1. It's a big cat. We can see a Chinese word "王"on it head. What is it?[ ]
A. A dog
B. A tiger
C. A horse
2. It's a season. It's hot. We can go swimming and eat ice-creams. [ ]
A. Spring
B. Winter
C. Summer
3. It's a small box. You can put your pencils, pens, and rulers in it. What is it? [ ]
A. A bag
B. A pencil box
C. A chair
4. We must wait for a bus at this place. What place is it? [ ]
A. A bus stop
B. A park
C. A post office
5. In this class we can sing songs. What class is it? [ ]
A. P.E.
B. Music
C. Math