A. 12 years    
B. 12 year

1. A:                                                ?
    B: Sarah is 12 years old.
2. A:                                                ?
    B: There are 4 seasons in a year.
3. A:                                                ?
    B: I feel sick.
4. A:                                                ?
    B: I visited my teacher last weekend.  
5. A:                                                ?
    B: Mike is watering the flowers.
6. A:                                                ?
    B: She watched TV yesterday.
7. A:                                                ?
    B: I have a fever.
8. A:                                                ?
    B: I'm 167 cm tall.
9. A:                                                ?
    B: I played football last Sunday.
10. A:                                                ?
      B: Yes, I have a cold.

1. A: ______________________________________?         
    B: Sarah is 12 years old. 
2. A: ______________________________________?        
    B: There are 4 seasons in a year.
3. A: ______________________________________?  
    B: I feel sick.
4. A: ______________________________________? 
    B: I visited my teacher last weekend.
5. A: ______________________________________? 
    B: Mike is watering the flowers.
6. A: ______________________________________? 
    B: She watched TV yesterday.
7. A: ______________________________________? 
    B: I have a fever. 
8. A: ______________________________________? 
    B: I'm 167 cm tall. 
9. A: ______________________________________? 
    B: I played football last Sunday.
10. A: ______________________________________? 
      B: Yes, I have a cold.