读一读，按要求完成句子。

1. These are my books. (对划线部分提问)

    ___________ books ___________ these?

2. Lynn's hair is red. (对划线部分提问)

    ___________ ___________ is Lynn's hair?

3. I go to school by bus. (对划线部分提问)

    ___________ ___________ you go to school?

4. My family likes to go for a walk. (对划线部分提问)

    ___________ does your family ___________ to do?

甲在犯罪时不满18周岁，开庭审理时已满18周岁。法庭应如何确定审理的形式？

A．应当公开审理

B．应当不公开审理

C．可以不公开审理

D．可以公开审理