根据句意用适当的介词填空.

1. Sally is often late _____ school.

2. Lisa,what are you listening _____ now?

3. I have to go _____ bed by 9:00 p. m.

4. Emily, what do you usually do _____ Sundays?

5. Peter often helps me _____ my lessons.

下列哪个不能构成太极拳锻炼方法上密切结合的整体性和内外合一性（）。

A、意识

B、眼神

C、呼吸

D、精神