情景交际我最棒，根据情景选择最佳答案。

1. A letter is __________ the table. [ ]

A. in              

B. on              

C. under

2. —Where is Xiaoyong? 

    —__________[ ]

A. He's on the box    

B. He is on the bed.

3. —What is this?   

    — __________.[ ]

A. It's on the box.    

B. It's a box.

4. He is swimming __________ the lake. [ ]

A. on              

B. in                

C. under

5. —__________?

    —It's on the chair.[ ]

A.  What is it    

B.  Where is the apple  

C.  How is the apple

6. She often  __________ in the park. [ ]

A. flies kites          

B. swims              

C. walks